PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 41

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
Link Layer Device
In a typical Packet over SONET application (i.e. using the PPP protocol) the S/UNI-2488
performs clock and data recovery in the receive direction and clock synthesis in the transmit
direction of the line interface. On the system side, the S/UNI-2488 interfaces directly with a data
link layer processor using a SATURN POS-PHY Level 3™ 32-bit (clocked up to 104 MHz)
synchronous FIFO interface over which packets are transferred. The initial configuration and
ongoing control and monitoring of the S/UNI-2488 are normally provided via a generic
microprocessor interface.
Figure 2 STS-48 (STM-16-16c) Packet Over SONET (POS-PHY Level 3) Router Application
RDAT[31:0]
TDAT[31:0]
RMOD[1:0]
TMOD[1:0]
RPRTY
TPRTY
RFCLK
TFCLK
RSOP
REOP
RERR
RENB
TSOP
TEOP
TERR
TENB
DTPA
RVAL
RSX
TFCLK
TENB
DTPA
TSOP
TPRTY
TDAT[31:0]
TMOD[1:0]
TEOP
TERR
RFCLK
RENB
RSX
RSOP
RPRTY
RDAT[31:0]
RMOD[1:0]
REOP
RERR
RVAL
S/UNI-2488
PM5381
POSL3_UL3B
RXD_P/_N
TXD_P/_N
S/UNI-2488 Telecom Standard Product Datasheet
SD
1
Transceiver
Optical
Released
41