Difference between revisions of "TIAO USB Multi Protocol Adapter User's Manual"

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10 PCS, 10cm x 10cm, 2 layers prototype for $38.80 shipped!
(→‎Board Dimension)
 
(28 intermediate revisions by the same user not shown)
Line 15: Line 15:
 
= Overview =
 
= Overview =
  
−
The [[http://www.diygadget.com/tiao-usb-multi-protocol-adapter-jtag-spi-i2c-serial.html TIAO USB Multi Protocol Adapter (TUMPA)]] is a multi-functional USB communication adapter for hobbyists or engineers.
+
The [https://www.diygadget.com/jtag-cables-and-microcontroller-programmers/114-tiao-usb-multi-protocol-adapter-jtag-spi-i2c-serial.html TIAO USB Multi Protocol Adapter (TUMPA)] is a multi-functional USB communication adapter for hobbyists or engineers.
 
The adapter is based on FDTI's flagship communication chip FT2232H, a USB 2.0 Hi-Speed (480Mb/s) to UART/FIFO IC. It has two multi-protocol synchronous serial engines (MPSSEs) which allow for communication using JTAG, I2C and SPI on two channels simultaneously.
 
The adapter is based on FDTI's flagship communication chip FT2232H, a USB 2.0 Hi-Speed (480Mb/s) to UART/FIFO IC. It has two multi-protocol synchronous serial engines (MPSSEs) which allow for communication using JTAG, I2C and SPI on two channels simultaneously.
 +
 +
Looking for PDF version of this manual?  It is here:
 +
 +
[http://www.tiaowiki.com/download//file.php?id=38 Download PDF version of this manual]
 +
 +
Thanks to stealther for creating the PDF manual.
  
 
= Technical Specifications =
 
= Technical Specifications =
−
 
+
* SWD support (Added in V2)
 +
* RST line jumper header (added in V2)
 
* USB 2.0 Hi-Speed (480Mb/s)
 
* USB 2.0 Hi-Speed (480Mb/s)
 
* JTAG / IEEE 1149.1 compatible.
 
* JTAG / IEEE 1149.1 compatible.
Line 52: Line 59:
 
= Board Dimensions =
 
= Board Dimensions =
  
 +
V1:
 
[[Image:Tumpa.dimension.gif|none]]
 
[[Image:Tumpa.dimension.gif|none]]
 +
 +
V2:
 +
[[Image:Tumpav2-d.png|none]]
  
 
= Board Layout =
 
= Board Layout =
  
 +
V1:
 
[[Image:tumpa.board.layout.png|none]]
 
[[Image:tumpa.board.layout.png|none]]
 +
 +
V2:
 +
[[Image:tumpav2-layout.png|none]]
  
 
# [[#DB9_Male_RS232|DB9 male RS232 connector (Channel B)]]
 
# [[#DB9_Male_RS232|DB9 male RS232 connector (Channel B)]]
Line 70: Line 85:
 
# [[#PWR/RX/TX_LEDs|Status LEDs.  From left to right: Power (indicates TUMPA is powered on), RX and TX]]
 
# [[#PWR/RX/TX_LEDs|Status LEDs.  From left to right: Power (indicates TUMPA is powered on), RX and TX]]
 
# [[#Target_Board_Power_LED|Target board power LED.  Indicates target board has power]]
 
# [[#Target_Board_Power_LED|Target board power LED.  Indicates target board has power]]
 +
# [[#RST_signal_polarity_select|RST signal polarity select.  Change the RST signal polarity]]
 +
# [[#SWD_Enable_Jumper|SWD Enable Jumper.  Enable or disable SWD]]
 +
# [[#SWD_Header|SWD header.  Header for SWD]]
  
 
= Connector Pinout & LEDs =
 
= Connector Pinout & LEDs =
Line 393: Line 411:
  
 
The VTAR can also be detected by software.  If VTAR has voltage > 3.3V, ACBUS4 (PIN 30) of FT2232H will be LOW.  Otherwise it will be HIGH.
 
The VTAR can also be detected by software.  If VTAR has voltage > 3.3V, ACBUS4 (PIN 30) of FT2232H will be LOW.  Otherwise it will be HIGH.
 +
 +
== RST signal polarity select ==
 +
 +
This header added in V2.
 +
 +
[[Image:RST-CFG.png|none]]
 +
 +
Jumper on 4 and 6: JTAG1's RST (Pin 21) directly connected to target's RST pin.
 +
One Jumper on 1 and 3, another jumper on 2 and 4: JTAG1's RST (pin 21) is connected to target's RST pin via a NPN transistor to reverse the polarity.
 +
 +
== SWD Enable Jumper ==
 +
 +
This jumper is added in V2.
 +
 +
[[image:Swd-enable.png|none]]
 +
 +
Jumper on 1 and 2: Enable SWD header (which disables SPI1)
 +
Jumper on 2 and 3: Disable SWD header (which enables SPI1)
 +
 +
== SWD Header ==
 +
 +
This jumper is added in V2.
 +
 +
[[Image:Swd-header.png|none]]
 +
 +
The pinout is compatible with ST-Link.
 +
 +
{|
 +
! align="left"|Pin #
 +
! Description
 +
|-
 +
| 1
 +
| +3.3V
 +
|-
 +
| 2
 +
| SWDCLK
 +
|-
 +
| 3
 +
| GND
 +
|-
 +
| 4
 +
| SWDIO
 +
|-
 +
| 5
 +
| NRST
 +
|-
 +
| 6
 +
| SWO
 +
|}
  
 
= Pin Connections =
 
= Pin Connections =
Line 404: Line 471:
 
| align="center" style="background:#f0f0f0;"|'''TTL Level Output Header'''
 
| align="center" style="background:#f0f0f0;"|'''TTL Level Output Header'''
 
| align="center" style="background:#f0f0f0;"|'''SPI Header 2'''
 
| align="center" style="background:#f0f0f0;"|'''SPI Header 2'''
 +
| align="center" style="background:#f0f0f0;"|'''SWD Header (Added in V2)'''
 
| align="center" style="background:#f0f0f0;"|'''Memo'''
 
| align="center" style="background:#f0f0f0;"|'''Memo'''
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ADBUS0||TCK||SCK||||||||||
+
| ADBUS0||TCK||SCK||||||||||SWDCLK||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ADBUS1||TDI||MOSI||||||||||
+
| ADBUS1||TDI||MOSI||||||||||SWDIO||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ADBUS2||TDO||MISO||||||||||
+
| ADBUS2||TDO||MISO||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ADBUS3||TMS||CS||||||||||
+
| ADBUS3||TMS||CS||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ADBUS4||RST||||||||||||
+
| ADBUS4||RST||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ADBUS5||nTRST||||||||||||
+
| ADBUS5||nTRST||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ADBUS6||DBGRQ||||||||||||
+
| ADBUS6||DBGRQ||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ADBUS7||RTCK||||||||||||
+
| ADBUS7||RTCK||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ||||||||||||||
+
| ||||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ACBUS0||DBGACK||||||||||||
+
| ACBUS0||DBGACK||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ACBUS1||||||||||||||Connected to nTRST pin of JTAG Header, (input)
+
| ACBUS1||||||||||||||||Connected to nTRST pin of JTAG Header, (input)
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ACBUS2||||||||||||||Connected to RST pin of JTAG Header, as (input)
+
| ACBUS2||||||||||||||NRST||Connected to RST pin of JTAG Header, as (input)
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ACBUS3||||||||||||||OEN Pin (enable buffer chip), active low (output)
+
| ACBUS3||||||||||||||||OEN Pin (enable buffer chip), active low (output)
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ACBUS4||||||||||||||Target present pin.  Detect VTAR, active low (input)
+
| ACBUS4||||||||||||||||Target present pin.  Detect VTAR, active low (input)
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ACBUS5||||||||||||||
+
| ACBUS5||||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ACBUS6||||||||||||||
+
| ACBUS6||||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ACBUS7||||||||||||||
+
| ACBUS7||||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ||||||||||||||
+
| ||||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BDBUS0||||||TX||TX||TX||SCK||
+
| BDBUS0||||||TX||TX||TX||SCK||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BDBUS1||||||RX||RX||RX||MOSI||
+
| BDBUS1||||||RX||RX||RX||MOSI||SWO||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BDBUS2||||||RTS||RTS||RTS||MISO||
+
| BDBUS2||||||RTS||RTS||RTS||MISO||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BDBUS3||||||CTS||CTS||CTS||CS||
+
| BDBUS3||||||CTS||CTS||CTS||CS||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BDBUS4||||||DTR||DTR||DTR||||
+
| BDBUS4||||||DTR||DTR||DTR||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BDBUS5||||||DSR||DSR||DSR||||
+
| BDBUS5||||||DSR||DSR||DSR||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BDBUS6||||||DCD||DCD||DCD||||
+
| BDBUS6||||||DCD||DCD||DCD||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BDBUS7||||||RI||RI||RI||||
+
| BDBUS7||||||RI||RI||RI||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| ||||||||||||||
+
| ||||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BCBUS0||||||||||||||
+
| BCBUS0||||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BCBUS1||||||||||||||
+
| BCBUS1||||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BCBUS2||||||||||||||
+
| BCBUS2||||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BCBUS3||||||||||||||RX LED
+
| BCBUS3||||||||||||||||RX LED
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BCBUS4||||||||||||||TX LED
+
| BCBUS4||||||||||||||||TX LED
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BCBUS5||||||||||||||
+
| BCBUS5||||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| BCBUS6||||||||||||||
+
| BCBUS6||||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| BCBUS7||||||||||||||
+
| BCBUS7||||||||||||||||
 
|- style="background:#f0f0f0; color:black"
 
|- style="background:#f0f0f0; color:black"
−
| ||||||||||||||
+
| ||||||||||||||||
 
|- style="align=center;background:white; color:black"
 
|- style="align=center;background:white; color:black"
−
| <span style="text-decoration: overline">PWREN</span>||||||||||||||Enable MAX3243. Active low (output)
+
| <span style="text-decoration: overline">PWREN</span>||||||||||||||||Enable MAX3243. Active low (output)
 
|}
 
|}
  

Latest revision as of 21:08, 3 November 2017








Buy various JTAG cables for your Satellite Receiver, Cable Modem, Wireless Router, Standard Wiggler from http://www.easymg.com and http://www.diygadget.com


Overview

The TIAO USB Multi Protocol Adapter (TUMPA) is a multi-functional USB communication adapter for hobbyists or engineers. The adapter is based on FDTI's flagship communication chip FT2232H, a USB 2.0 Hi-Speed (480Mb/s) to UART/FIFO IC. It has two multi-protocol synchronous serial engines (MPSSEs) which allow for communication using JTAG, I2C and SPI on two channels simultaneously.

Looking for PDF version of this manual? It is here:

Download PDF version of this manual

Thanks to stealther for creating the PDF manual.

Technical Specifications

  • SWD support (Added in V2)
  • RST line jumper header (added in V2)
  • USB 2.0 Hi-Speed (480Mb/s)
  • JTAG / IEEE 1149.1 compatible.
  • JTAG Baudrate up to 30Mbits/sec (programmable)
  • On board voltage translation via 74LVC14T245 (can be enabled / disabled via software or jumper)
  • JTAG signals are 5V to 1.8V tolerant
  • ARM Muli-ICE 20-pin header compatible.
  • Separate SPI/I2C/Serial interfaces
  • Configurable output of RS232 (MAX3243) or TTL level for serial communication
  • Configurable auto power down for MAX3243
  • Target board can be powered by TUMPA (3.3V) or self powered (via jumper)
  • 4 on-board LEDs / PWR, Targt PWR, TX and RX
  • 1 2x10 20 PIN JTAG header
  • 1 2x5 10 PIN RS232 level 2.54mm IDC header
  • 1 2x6 10 PIN TTL level 2.54mm IDC header
  • 2 2x3 6 PIN SPI 2.54mm IDC header
  • 1 x DB9 connector (male, RS232 level)
  • Target board power jumper
  • Buffer chip enable jumper
  • RS232 chip auto power down jumper
  • RS232 or TTL output jumber
  • USB Hot-Plug / JTAG Hot-Plug.
  • USB over-current protection via on-board resetable fuse.
  • Strong ESD protection on USB signals.
  • Based on the FTDI FT2232H USB device.
  • Designed for FTDI MPSSE easy-to-use.
  • Free drivers for Linux.
  • Free drivers for Windows XP, Windows Vista and Windows 7
  • Support both 32 bit and 64 bit operating systems
  • Board dimension: 65.41mm X 58.55mm (2.58" X 2.31")

Board Dimensions

V1:

Tumpa.dimension.gif

V2:

Tumpav2-d.png

Board Layout

V1:

Tumpa.board.layout.png

V2:

Tumpav2-layout.png
  1. DB9 male RS232 connector (Channel B)
  2. 2x3 standard 6 PIN 2.54mm IDC SPI connector (Channel A)
  3. RS232 Level 2.54mm IDC Header
  4. 2x10 standard 20 PIN 2.54mm IDC JTAG connector (Channel A)
  5. Auto power down jumper header for MAX3243 (force on or auto power down). Default force on (jumper is on pin 1and 2)
  6. Buffer enable jumper header for 74LVC16T245. Default is always enabled. (jumper on pin 2 and 3)
  7. Buffer chip 74LVC16T245 Vcc(B) power select jumper. Default is to power Vcc(B) by TUMPA (3.3V only) (jumper on pin 1 and 2)
  8. 3x8 PIN RS232 or TTL level serial communication jumpmer. Default is RS232 output (jumpers short top row and middle rows) (Channel B)
  9. 2x6 PIN TTL level 2.54mm IDC serial header (channel B)
  10. 2x3 PIN 2.54mm IDC SPI header (channel B)
  11. Status LEDs. From left to right: Power (indicates TUMPA is powered on), RX and TX
  12. Target board power LED. Indicates target board has power
  13. RST signal polarity select. Change the RST signal polarity
  14. SWD Enable Jumper. Enable or disable SWD
  15. SWD header. Header for SWD

Connector Pinout & LEDs

DB9 Male RS232

This connector is enabled only if RS232/TTL jumpers are on RS232-OUT, see Serial RS232/TTL level Selection Jumper

Tumpa.rs232.connector.1.pngTumpa.rs232.connector.2.png

Pin # Acronym Full name Direction Description
1 DCD Data Carrier Detect <<-- Modem connected to another
2 RxD Receive Data <<-- Receives bytes into PC
3 TxD Transmit Data -->> Transmits bytes out of PC
4 DTR Data Terminal Ready -->> I'm ready to communicate
5 SG Signal Ground Ground/GND
6 DSR Data Set Ready <<-- I'm ready to communicate
7 RTS Request To Send -->> RTS/CTS flow control
8 CTS Clear To Send <<-- RTS/CTS flow control
9 RI Ring Indicator <<-- Telephone Line Ringing

SPI Connector 1

Tumpa.spi1.connector.1.png
Pin # Description
1 MISO
2 Vcc (connected to on board 3.3V)
3 SCK
4 MOSI
5 CS
6 GND

RS232 Level 2.54mm IDC Header

This connector is enabled only if RS232/TTL jumpers are on RS232-OUT, see Serial RS232/TTL level Selection Jumper

Tumpa.rs232.connector.png

For your convenience, we added this header. This header is inter connected to the DB9 connector. The pinout is different then the pinout of DB 9 connector, however the extra pin (PIN 10) is connected to on board 3.3V power. GND pin (PIN 9) and +3.3V PIN (PIN 10) are always enabled regardless the jumpers position of Serial RS232/TTL level Selection Jumper.

This is the pinout of the RS232 level 2.54mm IDC header:


Pin # Description
1 RI
2 DCD
3 DSR
4 CTS
5 RX
6 TX
7 RTS
8 DTR
9 GND
10 +3.3V

20 PIN JTAG Connector

Tumpa.jtag.connector.1.png
Pin # Description
1 VTAR
3 nTRST
5 TDI
7 TMS
9 TCK
11 RTCK
13 TDO
15 RST
17 DBGRQ
19 DBGACK
2 Not Connected
4, 6, 8, 10, 12, 14, 16, 18, 20 GND


MAX3243 Auto Power Down Jumper

Tumpa.auto.power.down.max3243.1.png

This jumper controls whether to always enable MAX3243 or let FT2232H automatically enables it (save power).

  • Jumper on PIN 1 and PIN 2: Always enable MAX3243
  • Jumper on PIN 2 and PIN 3: FT2232H (PWREN, PIN 60)controls when to enable or disable MAX3243.

Buffer Enable Jumper

Tumpa.buff.enable.connector.1.png

This jumper controls whether to software enable/disable buffer chip (74LVC16T254).

  • Jumper on PIN 1 and PIN 2: Enable (Low)/Disable (High) 74LVC16T245 via FT2232H's ACBUS3 (PIN 29).
  • Jumper on PIN 2 and PIN 3: Always enable 74LVC16T245

Buffer Chip Power Selection Jumper

Tumpa.vtar.sel.connector.1.png

This jumper controls how to power the buffer / voltage translator chip (74LVC16T245)

The 74LVC16T245's Vcc(A) is connected to on board +3.3V. You can either power the Vcc(B) using on board +3.3V or powered by the target board. If powered by target board, please make sure the target board's power is in the range of +1.8V - +5.5V.

  • Jumper on PIN 1 and PIN 2: Power the buffer chip 74LVC16T245's Vcc(B) via the on board +3.3V source.
  • Jumper on PIN 2 and PIN 3: Power the buffer chio 74LVC16T245's Vcc(B) by target board. (PIN 3 of this header is connected to JTAG header's PIN 1)


Serial RS232/TTL level Selection Jumper

Tumpa.rs232.ttl.connector.1.png

These jumpers allows you to have serial communication at either RS232 level or TTL level.

TTL Level Serial Connector

This connector is enabled only if RS232/TTL jumpers are on TTL-OUT, see Serial RS232/TTL level Selection Jumper

Tumpa.ttl.connector.png


Pin # Description
1 Tx
2 Rx
3 RTS
4 CTS
5 DTR
6 DSR
7 DCD
8 RI
9 +3.3V
10 +5V (USB Power)
11, 12 GND

The power pins (9, 10, 11 and 12) are always connected, regardless of the jumper positions of Serial RS232/TTL level Selection Jumper.


SPI Connector 2

Tumpa.spi2.connector.1.png
Pin # Description
1 MISO
2 Vcc (connected to on board 3.3V)
3 SCK
4 MOSI
5 CS
6 GND


PWR/RX/TX LEDs

Tumpa.led.group.1.png
  • PWR: indicates the TUMPA board is connected to USB port of the computer and on board voltage regulator outputs +3.3V.
  • RX: Indicates FT2232H is receiving bytes from target via serial communication channel B
  • TX: Indicates FT2232H is transmitting bytes to target via serial communication channel B

Target Board Power LED

Tumpa.led.vtar.1.png
  • LED is ON: Target board (PIN 1 of JTAG Header) has power supply > 3.3V.
  • LED is OFF: Target board (PIN 1 of JTAG Header) has power supply < 3.3V or no power.

The VTAR can also be detected by software. If VTAR has voltage > 3.3V, ACBUS4 (PIN 30) of FT2232H will be LOW. Otherwise it will be HIGH.

RST signal polarity select

This header added in V2.

RST-CFG.png

Jumper on 4 and 6: JTAG1's RST (Pin 21) directly connected to target's RST pin. One Jumper on 1 and 3, another jumper on 2 and 4: JTAG1's RST (pin 21) is connected to target's RST pin via a NPN transistor to reverse the polarity.

SWD Enable Jumper

This jumper is added in V2.

Swd-enable.png

Jumper on 1 and 2: Enable SWD header (which disables SPI1) Jumper on 2 and 3: Disable SWD header (which enables SPI1)

SWD Header

This jumper is added in V2.

Swd-header.png

The pinout is compatible with ST-Link.

Pin # Description
1 +3.3V
2 SWDCLK
3 GND
4 SWDIO
5 NRST
6 SWO

Pin Connections

FT2232H 20 PIN JTAG Header SPI Header 1 DB9 Connector RS232 Level Output Header TTL Level Output Header SPI Header 2 SWD Header (Added in V2) Memo
ADBUS0 TCK SCK SWDCLK
ADBUS1 TDI MOSI SWDIO
ADBUS2 TDO MISO
ADBUS3 TMS CS
ADBUS4 RST
ADBUS5 nTRST
ADBUS6 DBGRQ
ADBUS7 RTCK
 
ACBUS0 DBGACK
ACBUS1 Connected to nTRST pin of JTAG Header, (input)
ACBUS2 NRST Connected to RST pin of JTAG Header, as (input)
ACBUS3 OEN Pin (enable buffer chip), active low (output)
ACBUS4 Target present pin. Detect VTAR, active low (input)
ACBUS5
ACBUS6
ACBUS7
 
BDBUS0 TX TX TX SCK
BDBUS1 RX RX RX MOSI SWO
BDBUS2 RTS RTS RTS MISO
BDBUS3 CTS CTS CTS CS
BDBUS4 DTR DTR DTR
BDBUS5 DSR DSR DSR
BDBUS6 DCD DCD DCD
BDBUS7 RI RI RI
 
BCBUS0
BCBUS1
BCBUS2
BCBUS3 RX LED
BCBUS4 TX LED
BCBUS5
BCBUS6
BCBUS7
 
PWREN Enable MAX3243. Active low (output)








Buy various JTAG cables for your Satellite Receiver, Cable Modem, Wireless Router, Standard Wiggler from http://www.easymg.com and http://www.diygadget.com



10 PCS, 10cm x 10cm, 2 layers prototype for $38.80 shipped!
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