MT9173/74

Data Sheet

3

Zarlink Semiconductor Inc.

Figure 3 - DV Port - 80 kbit/s (Modes 2, 3, 6)

14

16

DSTi/Di

Data ST-BUS In/Data In (Digital). A 2.048 Mbit/s serial PCM/data input in DN mode.

In MOD mode this is a continuous bit stream at the bit rate selected.

15

17

F0o/RCK Frame Pulse Out/Receive Bit Rate Clock output (Digital). In DN mode a 244 ns

wide negative pulse indicating the end of the active channel times of the device to

allow daisy chaining. In MOD mode provides the receive bit rate clock to the system.

16

19

C4/TCK

Data Clock/Transmit Baud Rate Clock (Digital). A 4.096 MHz TTL compatible clock

input for the MASTER and output for the SLAVE in DN mode. For MOD mode this pin

provides the transmit bit rate clock to the system.

17

21

OSC2

Oscillator Output. CMOS Output.

19

22

OSC1

Oscillator Input. CMOS Input. D.C. couple signals to this pin. Refer to D.C. Electrical

Characteristics for OSC1 input requirements.

20

23

Precan

pulldown (50 k

Ω) is provided on this pin.

18

1,6,

18,

20,

25

NC

No Connection. Leave open circuit

21

24

22

26

TEST

23

27

Receive Signal input (Analog).

24

28

Positive Power Supply (+5 V) input.

Pin Description (continued)

Pin #

Name

Description

24

28

F0

C4

DSTi

DSTo

F0o

Channel Time 0