PMC-Sierra PM5349 manual Bit GFC3 GFC2 GFC1 GFC0 PTI2 PTI1 PTI0, Clp

		PMC-Sierra, Inc.	PM5349 S/UNI-QUAD
S/UNI-QUAD
DATASHEET
PMC-971239	ISSUE 6		SATURN USER NETWORK INTERFACE (155-QUAD)

Register 0x84: TXCP Idle Cell Header Control

Bit	Type	Function	Default
Bit 7	R/W	GFC[3]	0
Bit 6	R/W	GFC[2]	0
Bit 5	R/W	GFC[1]	0
Bit 4	R/W	GFC[0]	0
Bit 3	R/W	PTI[2]	0
Bit 2	R/W	PTI[1]	0
Bit 1	R/W	PTI[0]	0
Bit 0	R/W	CLP	1

CLP:

The CLP bit contains the eighth bit position of the fourth octet of the idle/unassigned cell pattern. Cell rate decoupling is accomplished by transmitting idle cells when the TXCP detects that no outstanding cells exist in the transmit FIFO.

PTI[3:0]:

The PTI[3:0] bits contains the fifth, sixth, and seventh bit positions of the fourth octet of the idle/unassigned cell pattern. Idle cells are transmitted when the TXCP detects that no outstanding cells exist in the transmit FIFO.

GFC[3:0]:

The GFC[3:0] bits contain the first, second, third, and fourth bit positions of the first octet of the idle/unassigned cell pattern. Idle/unassigned cells are transmitted when the TXCP detects that no outstanding cells exist in the transmit FIFO. The all zeros pattern is transmitted in the VCI and VPI fields of the idle cell.

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