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

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.

Technical Specifications

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 Dimension

File:Tumpa.dimension.jpg

Board Layout

DB9 male RS232 connector (Channel B)
2x3 standard 6 PIN 2.54mm IDC SPI connector (Channel A)
RS232 Level 2.54mm IDC Header
2x10 standard 20 PIN 2.54mm IDC JTAG connector (Channel A)
Auto power down jumper header for MAX3243 (force on or auto power down). Default force on (jumper is on pin 1and 2)
Buffer enable jumper header for 74LVC16T245. Default is always enabled. (jumper on pin 2 and 3)
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)
3x8 PIN RS232 or TTL level serial communication jumpmer. Default is RS232 output (jumpers short top row and middle rows) (Channel B)
2x6 PIN TTL level 2.54mm IDC serial header (channel B)
2x3 PIN 2.54mm IDC SPI header (channel B)
Status LEDs. From left to right: Power (indicates TUMPA is powered on), RX and TX
Target board power LED. Indicates target board has power

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

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)

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