73M2901CEIGV 查看數據表（PDF） - Teridian Semiconductor Corporation

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73M2901CEIGV

V.22bis Single Chip Modem

Teridian Semiconductor Corporation 

DS_2901CE_031

73M2901CE Data Sheet

3 Pin Descriptions

3.1 Power Pins

Pin Name

VPA

VNA

VPD

VND

Pin Number

10

16

2, 20, 25

1, 17, 22

Type

I

I

I

I

Description

Positive analog voltage (analog supply)

Negative analog voltage (analog ground)

Positive digital voltage (digital supply)

Negative digital voltage (digital ground)

3.2 Analog Interface Pins

Pin Name

RXA

TXAN

TXAP

VBG

Pin Number

15

11

12

14

Type

I

O

O

O

VREF

13

O

Description

Receive analog input

Transmit analog - output

Transmit analog + output

Analog Band Gap voltage reference (0.1 µF to VNA). This pin

must not be connected to external circuitry other than the

decoupling capacitor.

Analog reference voltage (0.1 µF to VNA)

3.3 Digital Interface Pins

Pin Name

RESET

RXCLK

TXCLK

TXD

RXD

USR10

Pin Number

9

27

24

23

26

8

Type

I

O

O

I

O

I/O

USR11

7

I/O

RTS

CTS

DSR

DCD

RI

RELAY

USR20

6

I

5

O

4

O

3

O

32

O

31

O

29

I/O

Description

Reset

Receive data synchronous clock, valid on rising edge

Transmit data synchronous clock, valid on rising edge

Serial data input from DTE

Serial output to DTE

Programmable I/O port. This pin can optionally be used to

control an external switch for external Line In Use circuitry.

Programmable I/O port. This pin can optionally be used to

control an external switch for caller ID operation.

Request to send

Clear to send

Data set ready

Data carrier detect

Ring indicator

Relay driver output

Programmable I/O port

Rev. 3.4

7

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