PM7347 datasheet(109/341 Pages) PMC

109 / 341 page

S/UNI®-JET Data Sheet

Released

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

109

Document ID: PMC-1990267, Issue 3

Bit

Type

Function

Default

Bit 7

Unused

Bit 6

R/W

SRCZN

Bit 5

R/W

SRCF1

Bit 4

R/W

SRCB1

Bit 3

R/W

SRCG1

Bit 2

R/W

SRCM1

Bit 1

R/W

SRCM2

Bit 0

R/W

SRCC1

The SRCC1 bit value ORed with input TPOHINS selects the source for the C1 octet on a bit

by bit basis. If the OR results in a logic zero, the C1 bit position is derived internally as

specified by the FIXSTUFF bit in the SPLT Configuration Register. If the OR results in a

logic one, the C1 bit position is inserted with the value sampled on TPOH.

SRCM2

The SRCM2 bit value ORed with input TPOHINS selects the source for the M2 octet on a bit

by bit basis. If the OR results in a logic zero, the M2 bit position is derived internally as

specified by the M2TYPE bit in the SPLT Configuration Register. If the OR results in a logic

one, the M2 bit position is inserted with the value sampled on TPOH. The M2 octet is set to

logic zero (as required by the ATM Forum User Network Interface specification) by writing

this bit position with a logic one, and connecting the TPOH input to VSS.

SRCM1

The SRCM1 bit value ORed with input TPOHINS selects the source for the M1 octet on a bit

by bit basis. If the OR results in a logic zero, the M1 bit position is derived internally as

specified by the M1TYPE bit in the SPLT Configuration Register. If the OR results in a logic

one, the M1 bit position is inserted with the value sampled on TPOH. The M1 octet is set to

logic zero (as required by the ATM Forum User Network Interface specification) by writing

this bit position with a logic one, and connecting the TPOH input to VSS.

SRCG1

The SRCG1 bit value ORed with input TPOHINS selects the source for the G1 octet on a bit

by bit basis. If the OR results in a logic zero, the G1 bit position is derived internally as

required. If the OR results in a logic one, the G1 bit position is inserted with the value

sampled on TPOH.

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