PMC-Sierra PM5349 manual CPTR9, CPTR8

Models: PM5349

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PMC-Sierra, Inc.

S/UNI-QUAD

DATASHEET

PM5349 S/UNI-QUAD

PMC-971239

ISSUE 6

SATURN USER NETWORK INTERFACE (155-QUAD)

 

 

 

Register 0x44: TPOP Current Pointer MSB

Bit

Type

Function

Default

Bit 7

 

Unused

X

Bit 6

 

Unused

X

Bit 5

 

Unused

X

Bit 4

 

Unused

X

Bit 3

 

Unused

X

Bit 2

 

Unused

X

Bit 1

R

CPTR[9]

X

Bit 0

R

CPTR[8]

X

CPTR[9:8]:

The CPTR[9:8] bits, along with the CPTR[7:0] bits in the TPOP Current Pointer LSB Register reflect the value of the current payload pointer being inserted in the transmit stream. The value may be changed by loading a new pointer value using the TPOP Arbitrary Pointer LSB and MSB Registers, or by inserting positive and negative pointer movements using the PSE and NSE register bits.

It is recommended the CPTR[9:0] value be software de-bounced to ensure a correct value is received.

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

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Page 133
Image 133
PMC-Sierra PM5349 manual CPTR9, CPTR8