PM7375-SC datasheet(178/430 Pages) PMC

178 / 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

162

10.1.62

Bit

Type

Function

Default

Bit 15

Unused

Bit 14

Unused

Bit 13

Unused

Bit 12

Unused

Bit 11

Unused

Bit 10

Unused

Bit 9

Unused

Bit 8

Unused

Bit 7

R/W

Reserved

Bit 6

Reserved

Bit 5

Reserved

Bit 4

R/W

DHEC

Bit 3

R/W

Reserved

Bit 2

R/W

HECADD

Bit 1

R/W

DSCR

Bit 0

R/W

FIFORST

FIFORST:

The FIFORST bit is used to reset the internal four cell transmit FIFO. When

FIFORST is set to logic zero, the FIFO operates normally. When FIFORST is set

to logic one, the FIFO is immediately emptied and ignores writes. The FIFO

remains empty and continues to ignore writes until a logic zero is written to

FIFORST.

DSCR:

The DSCR bit controls the scrambling of the cell payload. When DSCR is a logic

one, cell payload scrambling is disabled. When DSCR is a logic zero, payload

scrambling is enabled.

HECADD:

The HECADD bit controls the addition of the coset polynomial, x6+x4+x2+1, to

the HEC octet prior to insertion in the synchronous payload envelope. When

HECADD is a logic one, the polynomial is added, and the resulting HEC is

inserted. When HECADD is a logic zero, the polynomial is not added, and the

unmodified HEC is inserted.

PM7375-SC Datasheet(PDF) 178 Page - PMC-Sierra, Inc

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