CY7B952 Datasheet, PDF (1/9 Pages) Cypress Semiconductor – SSTTM SONET/SDH Serial Transceiver

CY7B952
SST™ SONET/SDH Serial Transceiver
Features
• 100K ECL compatible I/O
• OC-3 Compliant with Bellcore and CCITT (ITU) specifi-
cations on:
— Jitter Generation (<0.01 UI)
— Jitter Transfer (<130 kHz)
— Jitter Tolerance
• SONET/SDH and ATM Compliant
• Compatible with IGT WAC013, IGT WAC413, and
PMC-Sierra PM5343
• Clock and data recovery from 51.84- or 155.52-MHz
datastream
• 155.52-MHz clock multiplication from 19.44-MHz source
• No output clock “drift” without data transitions
• Link Status Indication
• Loop-back testing
• Single +5V supply
• 24-pin SOIC
• Compatible with fiber-optic modules, coaxial cable, and
twisted pair media
• Power-down options to minimize power or crosstalk
• Low operating current: <70 mA
• 0.8µ BiCMOS
• 51.84-MHz clock multiplication from 6.48-MHz source Functional Description
• ±1% frequency agility
• Line Receiver Inputs: No external buffering required
• Differential output buffering
The SONET/SDH Serial Transceiver (SST) is used in
SONET/SDH and ATM applications to recover clock and data
information from a 155.52-MHz or 51.84-MHz NRZ or NRZI
serial data stream and to provide differential data buffering for
the Transmit side of the system.
Logic Block Diagram _LOOP(t)
MODE
FC+
FC–
RIN+
RIN–
PLL
CD
TOUT+
TOUT–
RECEIVE
TRANSMIT
PLL
x8
Pin Configuration
RCLK+
RCLK–
RSER+
RSER–
LFI(t)
TSER+
TSER–
FC+
FC–
RIN+
RIN–
MODE
V_CC
CD
LOOP
REFCLK–
REFCLK+
TOUT–
TOUT+
SOIC
Top View
1
24
2
23
3
22
4
21
5
20
6 _CY7B952 19
7
18
8
17
9
16
10
15
11
14
12
13
TCLK+
TCLK–
RCLK–
RCLK+
RSER–
RSER+
LFI
V_CC
V_SS
V_CC
TCLK–
TCLK+
TSER+
TSER–
REFCLK+
REFCLK–
SST
Clock/Data
Recovery
Line
Driver
S->P
P->S
SONET/SDH
Transport
Overhead
Transceiver
SONET/SDH
Path
Overhead
Transceiver
Cypress
CY7B952
PMC-Sierra
PM5343STXC
PMC-Sierra
PM5344SPTX
Figure 1. SONET/SDH Overhead Processing Application
Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600
Document #: 38-02018 Rev. *B
Revised April 27, 2004