PMC-Sierra PM5349 manual Ftptr, Nse, Pse, Ndf, Pld

PMC-Sierra, Inc.

S/UNI-QUAD

DATASHEET

PM5349 S/UNI-QUAD

PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)

Register 0x41: TPOP Pointer Control

Bit	Type	Function	Default
Bit 7	R/W	Reserved	0
Bit 6	R/W	FTPTR	0
Bit 5	R/W	SOS	0
Bit 4	R/W	PLD	0
Bit 3	R/W	NDF	0
Bit 2	R/W	NSE	0
Bit 1	R/W	PSE	0
Bit 0	R/W	Reserved	0

This register allows control over the transmitted payload pointer for diagnostic purposes.

PSE:

The PSE bit controls the insertion of positive pointer movements. A logic zero to logic one transition on this bit enables the insertion of a single positive pointer justification in the transmit stream. This register bit is automatically cleared when the pointer movement is inserted.

NSE:

The NSE bit controls the insertion of negative pointer movements. A logic zero to logic one transition on this bit enables the insertion of a single negative pointer justification in the transmit stream. This register bit is automatically cleared when the pointer movement is inserted.

NDF:

The NDF bit controls the insertion of new data flags in the inserted payload pointer. When a logic one is written to this bit position, the pattern contained in the NDF[3:0] bit positions in the TPOP Arbitrary Pointer MSB Register is inserted continuously in the payload pointer. When a logic zero is written to this bit position, the normal pattern (0110) is inserted in the payload pointer.

PLD:

The PLD bit controls the loading of the pointer value contained in the TPOP Arbitrary Pointer Registers. Normally the TPOP Arbitrary Pointer Registers are written to set up the arbitrary new pointer value, the S-bit values, and the NDF pattern. A logic one is then written to this bit position to load the new pointer value. The new data flag bit positions are set to the programmed NDF

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