ST16654 查看數據表（PDF） - Exar Corporation

零件编号

产品描述 (功能)

比赛名单

ST16654

QUAD UART WITH 64-BYTE FIFO AND INFRARED (IrDA) ENCODER/DECODER

Exar Corporation 

ST16C654/654D

SYMBOL DESCRIPTION

Symbol

Pin

Signal

68 100 64 type

Pin Description

RX/IRRX A-B 7,29 97,34 62,20

RX/IRRX C-D 41,63 47,85 29,51 I Receive Data Input RX/IRRX A-D. - These inputs are

associated with individual serial channel data to the

ST16C654. Two user selectable interface options are avail-

able. The first option supports the standard modem inter-

face. The second option provides an Infrared decoder

interface, see figures 2/3. When using the standard modem

interface, the RX signal will be a logic 1 during reset, idle (no

data), or when the transmitter is disabled. The inactive state

(no data) for the Infrared decoder interface is a logic 0. MCR

bit-6 selects the standard modem or infrared interface.

During the local loopback mode, the RX input pin is disabled

and TX data is internally connected to the UART RX Input,

internally.

TX/IRTX A-B 17,19 14,16 8,10

TX/IRTX C-D 51,53 65,67 39,41 O Transmit Data - These outputs are associated with indi-

vidual serial transmit channel data from the 654. Two user

selectable interface options are available. The first user

option supports a standard modem interface. The second

option provides an Infrared encoder interface, see figures 2/

3. When using the standard modem interface, the TX signal

will be a logic 1 during reset, idle (no data), or when the

transmitter is disabled. The inactive state (no data) for the

Infrared encoder/ decoder interface is a Logic 0. MCR bit-

6 selects the standard modem or infrared interface. During

the local loopback mode, the TX input pin is disabled and TX

data is internally connected to the UART RX Input.

Rev. 4.10

5-76

Share Link: