PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 79

• Manufacturer Part Number: PM8610-BIAP
• Description: SBS Telecom Standard Product Data Sheet Preliminary
• Manufacturer: PMC [PMC-Sierra, Inc]

10.9
10.10 LVDS Transmitters
10.11 Clock Synthesis Unit
10.12 Transmit Reference Generator
10.13 LVDS Receivers
10.14 Data Recovery Units
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000168, Issue 3
Transmit Serializer
The Transmit Serializer blocks, TWPS and TPPS, convert 8B/10B characters to bit-serial format.
The Transmit Working Serializer, TWPS, generates a serial stream for the working transmit
LVDS link, TPWRK/TNWRK. The Transmit Protect Serializer, TPPS, generates a serial stream
for the protect transmit LVDS link, TPPROT/TNPROT.
The LVDS Transmitters, TWLV and TPLV, convert 8B/10B encoded digital bit-serial streams to
LVDS signaling levels. The Transmit Working LVDS Interface, TWLV, drives the working
transmit LVDS links, TPWRK/TNWRK. The Transmit Protect LVDS Interface block, TPLV,
drives the protect transmit LVDS link, TPPROT/TNPROT.
The Clock Synthesis Unit, CSU, block generates the 777.6 MHz clock for the transmit and
receive LVDS links.
The Transmit Voltage Reference Generator block generates bias voltages and currents for the
LVDS Transmitters.
The LVDS Receivers, RWLV and RPLV, convert LVDS signaling levels to 8B/10B encoded
digital bit-serial. The Receive Working LVDS Interface block, RWLV, connects to the working
receive LVDS links, RPWRK/RNWRK. The Receive Protect LVDS Interface block, RPLV,
connects to the protect receive LVDS link RPPROT/RNPROT.
The Data Recovery Units, WDRU and PDRU, monitor the receive LVDS link for transitions to
determine the extent of bit cycles on the link. It then adjusts its internal timing to sample the link
in the middle of the data “eye”. WDRU retrieves data from the working receive LVDS link,
RPWRK/RNWRK. PDRU processes the protect receive LVDS link, RPPROT/RNPROT.
The DRU block also converts the serial stream into 10-bit words. The words are constructed
from ten consecutive received bits without regard to 8B/10B character boundaries.
SBS Telecom Standard Product Data Sheet
Preliminary
79