XR68C192(2005) Просмотр технического описания (PDF) - Exar Corporation

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производитель

XR68C192
(Rev.:2005)

DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER

Exar Corporation 

XR68C92/192

SYMBOL DESCRIPTION (* 44 pin LQFP)

Symbol

OP3

OP4

OP5

OP6

OP7

GND

VCC

N.C.

Pin

Signal

44 40 44* type

Pin Description

following functions can be selected for this output pin by

programming the Output Port Confiuration Register bits 1,0;

TxAClk1 -Transmit 1X clock.

TxAClk16 -Transmit 16X clock

RxAClk1 -Receive 1X clock

15 13

8

O Multi-purpose output. General purpose output or one of the

following functions can be selected for this output pin by

programming the Output Port Confiuration Register bits 3,2;

C/T -Counter timer output (Open drain output)

TxBClk1 -Transmit 1X clock

RxBClk1 -Receive 1X clock

30

27

25

O Multi-purpose output. General purpose output or one of the

following functions can be selected for this output pin by

programming the Output Port Confiuration Register bit 4;

-RxARDY -Receive ready signal (Open drain output)

-RxAFULL - Receive FIFO full signal (Open drain output)

16 14

9

O Multi-purpose output. General purpose output or one of the

following functions can be selected for this output pin by

programming the Output Port Confiuration Register bit 5;

-RxBRDY - Receive ready signal (Open drain output)

-RxBFULL - Receive FIFO full signal (Open drain output)

29

26

24

O Multi-purpose output. General purpose output or Transmit A

holding register empty interrupt (-TxARDY Open drain out-

put).

17

15

10

O Multi-purpose output. General purpose output or Transmit B

holding register empty interrupt (-TxBRDY Open drain out-

put)

22 20 16,17 Pwr Signal and power ground.

44 40 38,39 Pwr Power supply input, 2.97V to 5.5V.

1,12 - 11,23

23,34

No Connection.

Rev. 1.33

6

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