IOBUS1 datasheet(38/88 Pages) FTDI

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Datasheet

Vinculum-II Embedded Dual USB Host Controller IC

V ers ion 1 .7

Doc ument N o.: FT _000138 C learance N o.: FT DI# 1 43

64 Pin

Package

Available

pins

48 Pin

Package

Available

pins

32 Pin

Package

Available

pins

Name

Type

Description

14, 18,

23, 27,

32, 42,

46, 50,

56, 60,

14, 19,

23, 34,

38, 44,

15, 26,

uart_ri#

Input

Ring indicator is used to wake VNC2

depending on firmware

11, 15,

19, 24,

28, 39,

43, 47,

51, 57,

11, 15,

20, 31,

35, 41,

11, 23

uart_tx_active

Output

Enable transmit data for RS485 designs.

This signal may be used to signal that a

transmit operation is in progress. The

uart_tx_active signal will be set high one

bit-time before data is transmitted and

return low one bit time after the last bit

of a data frame has been transmitted.

Table 6.1 Data and Control Bus Signal Mode Options – UART Interface

The UART signals can be programmed to a choice of I/O pins depending on the package size. Table 6.1

details the available pins for each of the UART signals. Further details on the configuration of input and

output signals are available in Section 5 - I/O Multiplexer.

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