SA8702

sames

4

PIN DESCRIPTION

Pin No.

I/O

Name

Description

1

O

TSX

An open drain N-channel high impedance, but pulls

low during any active timeslot.

2

I

MRST

A Schmitt trigger input that asynchronously disables

all outputs.

3

O

FSO

A timeslot output which is normally low, and goes

active-high for 8 cycles of BCLK when a valid XSYNC

is made.

4

O

FS1

Similar to pin 3.

5

O

FS2

Similar to pin 3.

6

I

BL0

The input for the LSB of the 2 bit word which defines

the active block.

7

I

BL1

The input for the MSB of the 2 bit word which defines

the active block.

8

I

VSS

The OV ground connection to the device.

9

I

BCLK

The 2,048MHz station clock input.

10

I

XSYNC

The input pulse XSYNC used to generate the first of

the eight timeslots and also defines the beginning of

block 0.

11

O

FS7

Similar to pin 3.

12

O

FS6

Similar to pin 3.

13

O

FS5

Similar to pin 3.

14

O

FS4

Similar to pin 3.

15

O

FS3

Similar to pin 3.

16

I

VDD

The positive supply to the device.