SLK2721

OC48+FEC/24/12/3 SONET/SDH MULTIRATE TRANSCEIVER

WITH ENHANCED JITTER TOLERANCE

SLLS532 − JUNE 2002

6

POST OFFICE BOX 655303

Terminal Functions(Continued)

control/status pins (continued)

TERMINAL

TYPE

DESCRIPTION

NAME

NO.

TYPE

DESCRIPTION

SPILL

49

TTL output

TX FIFO collision output

TESTEN

43

TTL input (with pulldown)

Production test mode enable. This pin must be left unconnected or tied low.

voltage supply and reserved pins

TERMINAL

TYPE

DESCRIPTION

NAME

NO.

TYPE

DESCRIPTION

GND

1, 6, 19, 23, 26,

28, 30, 31, 33,

40

Ground

Digital logic ground

GNDA

10, 13

Ground

Analog ground

GNDLVDS

61, 69, 76, 77,

89, 93, 96, 100

Ground

LVDS ground

GNDPLL

12

Supply

PLL ground

RSVD

52

Reserved

This pin needs to be tied to ground or left floating for normal operation.

VDD

3, 22, 25, 29,

32, 35, 50

Supply

Digital logic supply voltage (2.5 V)

VDDA

7, 16

Supply

Analog voltage supply (2.5 V)

VDDLVDS

62, 72, 75, 78,

90, 91, 92, 97

Supply

LVDS supply voltage (2.5 V)

VDDPLL

11

Supply

PLL voltage supply (2.5 V)