PM7375-SC datasheet(120/430 Pages) PMC

120 / 430 page

PM7375 LASAR-155

DATA SHEET

PMC-931127

ISSUE 6

LOCAL ATM SAR & PHYSICAL LAYER

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

104

UNI_POTS

The UNI_POTS bit selects the function for the RGFC/RLD, RCP/RLDCLK,

TGFC/TLD and TCP/TLDCLK. When UNI_POTS is set to logic one, the signals

are configured to source and sink the SONET Line Data Communication

Channel (DCC). When UNI_POTS is set to logic zero, the signals are configured

to source and sink the GFC bits in cell headers.

RBYP

The RBYP bit disables clock recovery. When RBYP is set to logic one, RXD+/- is

sampled on the rising edge of RRCLK+/-. When RBYP is set to logic zero, the

receive clock is recovered from the RXD+/- bit stream.

TBYP

The TBYP bit disables clock synthesis. When TBYP is set to logic one, transmit

clock synthesis is disabled and TRCLK+/- becomes the line rate clock of 155.52

MHz or 51.84 MHz. When TBYP is set to logic zero, the transmit clock is

synthesized from a 19.44 MHz or 6.48 MHz reference.

AUTOXOFF

The AUTOXOFF bit determines whether to use the received GFC codes to

enforce an XON/XOFF protocol. When AUTOXOFF is set to logic one, receive

GFC codes are used to XON and XOFF transmission. When AUTOXOFF is set

to logic zero, the received GFC codes are ignored.

PM7375-SC Datasheet(PDF) 120 Page - PMC-Sierra, Inc