FT4232H datasheet(13/43 Pages) FTDI

13 / 43 page

Document No.: FT_000060

FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC

Datasheet Version 2.05

Clearance No.: FTDI#78

3.4.2

FT4232H pins used in a Synchronous or Asynchronous Bit-Bang Interface

The FT4232H channel A,B,C or channel D can be configured as a bit-bang interface. There are two types

of bit-bang modes: synchronous and asynchronous.

When configured in any bit-bang mode (synchronous or asynchronous), the pins used and the

descriptions of the signals are shown in Table 3.6

Channel

Number

Pin Nos.

Name

Type

Synchronous or Asynchronous Bit-Bang

Configuration Description

24,23,22,21,

19,18,17,16

ADBUS[7:0]

I/O

Channel A, D7 to D0 bidirectional bit-bang data

34,33,32,30,

29,28,27,26

BDBUS[7:0]

I/O

Channel B, D7 to D0 bidirectional bit-bang data

46,45,44,43,

41,40,39,38

CDBUS[7:0]

I/O

Channel C, D7 to D0 bidirectional bit-bang data

59,58,57,55

54,53,52,48

DDBUS[7:0]

I/O

Channel D, D7 to D0 bidirectional bit-bang data

Table 3.6 Channel A,B,C and Channel D Synchronous or Asynchronous Bit-Bang Configured Pin

Descriptions

For a functional description of this mode, please refer to section 4.5 Synchronous and Asynchronous Bit-

Bang Interface Mode Description

FT4232H Datasheet(PDF) 13 Page - Future Technology Devices International Ltd.