FT2232D datasheet(13/56 Pages) FTDI

13 / 56 page

DS2232D Version 0.91

FT2232D Dual USB UART / FIFO I.C.

5.2 IO Pin Definitions by Chip Mode

The FT2232D will default to dual serial mode (232 UART mode on both channel A and B, if no external EEPROM is

used, or the external EEPROM is blank. The definition of the following pins vary according to the chip’s mode :-

Channel A

Pin#

Generic

Name

Pin Definitions by Chip Mode **Note 2

232 UART

Mode

245 FIFO

Mode

Enhanced

Asynchronous

and

Synchronous

Bit-Bang Modes

MPSSE

**Note

MCU

Host Bus

Emulation

Mode

**Note 5

Fast

Opto-

Isolated

Serial

Mode

CPU FIFO

Interface

Mode

ADBUS0 TXD

TCK/SK

AD0

**Note 3

ADBUS1 RXD

TDI/D0

AD1

ADBUS2 RTS#

TDO/DI

AD2

ADBUS3 CTS#

TMS/CS

AD3

ADBUS4 DTR#

GPIOL0

AD4

ADBUS5 DSR#

GPIOL1

AD5

ADBUS6 DCD#

GPIOL2

AD6

ADBUS7 RI#

GPIOL3

AD7

ACBUS0 TXDEN

RXF#

WR#

**Note 6

GPIOH0

I/O0

CS#

ACBUS1 SLEEP#

TXE#

RD#

**Note 6

GPIOH1

I/O1

ACBUS2 RXLED#

RD#

WR#

**Note

GPIOH2

IORDY

RD#

ACBUS3 TXLED#

RD#

**Note

GPIOH3

OSC

WR#

SI/WUA

**Note

**Note 2 : 232 UART, 245 FIFO, CPU FIFO Interface, and Fast Opto-Isolated modes are enabled in the external

EEPROM. Enhanced Asynchronous and Synchronous Bit-Bang modes, MPSSE, and MCU Host Bus Emulation

modes are enabled using the driver command set bit mode. See Section 5.2 for details.

**Note 3 : Channel A can be configured in another IO mode if channel B is in Fast Opto-Isolated Serial Mode. If both

Channel A and Channel B are in Fast Opto-Isolated Serial Mode all of the IO will be on Channel B.

**Note : MPSSE is Channel A only.

**Note 5 : MCU Host Bus Emulation requires both Channels.

**Note 6 : The Bit-Bang Mode (synchronous and asynchronous) WR# and RD# strobes are on these pins when the

main Channel mode is 245 FIFO, CPU FIFO interface, or Fast Opto-Isolated Serial Modes.

**Note : The Bit-Bang Mode (synchronous and asynchronous) WR# and RD# strobes are on these pins when the

main Channel mode is 232 UART Mode.

**Note : SI/WU is not available in these modes.

FT2232D Datasheet(PDF) 13 Page - Future Technology Devices International Ltd.

FT2232D Datasheet(HTML) 13 Page - Future Technology Devices International Ltd.

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