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

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Overview

The TIAO USB Multi Protocol Adapter Lite (TUMPA Lite) is a multi-functional USB communication adapter for hobbyists or engineers. The adapter is based on FDTI's flagship communication chip FT232H, a USB 2.0 Hi-Speed (480Mb/s) to UART/FIFO IC. It has one multi-protocol synchronous serial engines (MPSSEs) which allow for communication using JTAG, I2C and SPI on two channels simultaneously.

Technical Specifications

Single channel USB to serial / parallel ports with a variety of configurations.
Entire USB protocol handled on the chip. No USB specific firmware programming required.
USB 2.0 Hi-Speed (480Mbits/Second) and Full Speed (12Mbits/Second) compatible.
Multi-Protocol Synchronous Serial Engine (MPSSE) to simplify synchronous serial protocol (USB to JTAG, I2C, SPI or bit-bang) design.
UART transfer data rate up to 12Mbaud. (RS232 Data Rate limited by external level shifter).
USB to asynchronous 245 FIFO mode for transfer data rate up to 8 MByte/Sec.
USB to synchronous 245 parallel FIFO mode for transfers up to 40 Mbytes/Sec
Supports a half duplex FT1248 interface with a configurable width, bi-directional data bus (1, 2, 4 or 8 bits wide).
CPU-style FIFO interface mode simplifies CPU interface design.
Fast serial interface option.
FTDI's royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.
Adjustable receive buffer timeout.
Option for transmit and receive LED drive signals.
Bit-bang Mode interface option with RD# and WR strobes
Highly integrated design includes 5V to 3.3/+1.8V LDO regulator for VCORE, integrated POR function
Asynchronous serial UART interface option with full hardware handshaking and modem interface signals.
Fully assisted hardware or X-On / X-Off software handshaking.
UART Interface supports 7/8 bit data, 1/2 stop bits, and Odd/Even/Mark/Space/No Parity.
Auto-transmit enable control for RS485 serial applications using TXDEN pin.
Operation configuration mode and USB Description strings configurable in external EEPROM over the USB interface.
Configurable I/O drives strength (4, 8, 12 or 16mA) and slew rate.
Low operating and USB suspend current.
Supports self powered, bus powered and high-power bus powered USB configurations.
UHCI/OHCI/EHCI host controller compatible.#
USB Bulk data transfer mode (512 byte packets in Hi-Speed mode).
+1.8V (chip core) and +3.3V I/O interfacing (+5V Tolerant).
Extended -40°C to 85°C industrial operating temperature range.
Compact 48-pin Lead Free LQFP or QFN package
Configurable ACBUS I/O pins.
4 on-board LEDs / PWR, +3.3V Out, TX and RX
1 2x10 20 PIN JTAG header
1 2x3 6 PIN SPI 2.54mm IDC header
1 SPI MISO pullup config IDC header
1 Configurable TX/RX LED IDC header
On board 3.3V LDO
USB over-current protection via on-board resetable fuse.
Strong ESD protection on USB signals.
Based on the FTDI FT232H 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: 48.64mm X 70.61mm (1.91" X 2.78")

Board Dimensions

Board Layout

LEDs - RX/TX/PWR/+3.3V Output
2x3 standard 6 PIN 2.54mm IDC for RX/TX LED
2x3 PIN 2.54mm IDC SPI header
SPI pullup enable header
2x10 standard 20 PIN 2.54mm IDC JTAG connector
2x14 PIN 2.54mm IDC GPIO Pins
2x14 PIN 2.54mm IDC GPIO Pins

Connector Pinout & LEDs

RX: Indicates FT232H is receiving bytes from target via serial communication channel. See 2x3 standard 6 PIN 2.54mm IDC for RX/TX LED on how to enable this.
TX: Indicates FT232H is transmitting bytes to target via serial communication channel. See 2x3 standard 6 PIN 2.54mm IDC for RX/TX LED on how to enable this.
PWR: Indicates the TUMPA Lite board is connected to USB port of the computer and FT232H's onboard voltage regulator outputs +3.3V.
V3.3 Out: Indicates the TUMPA Lite's onboard voltage LDO outputs +3.3V.

RX TX LED Config Header

This jumper header enables LED output on RX and TX. With FT232H's default configuration, AC8 is the RX led output pin, AC9 is the TX led output pin. Install a jumper on pin 1 and 3 enables RX LED. Install a jumper on pin 2 and 4 enables TX LED. If AC8 and AC9 are configured for GPIO, you need to remove jumpers on this header.

SPI Connector

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

DB9 Male RS232

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

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

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

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

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

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

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

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

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

Jumpers short top row (RS232-OUT) and middle row (SELECT) (this is the default): enable RS232 level serial output. (thus DB9 Connector and RS232 Level 2.54mm IDC Header are enabled)
Jumpers short middle row (SELECT)and bottom row (TTL-OUT): enable TTL level serial output. (thus TTL Level Serial Connectoris enabled)

TTL Level Serial Connector

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

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

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

PWR/RX/TX LEDs

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

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.

Pin Connections

FT2232H	20 PIN JTAG Header	SPI Header 1	DB9 Connector	RS232 Level Output Header	TTL Level Output Header	SPI Header 2	Memo
ADBUS0	TCK	SCK
ADBUS1	TDI	MOSI
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							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
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)