PMC-Sierra PM5349 manual Tfpien, Rxdinv, Loopt, Sdle, Lle, Pdle

PMC-Sierra, Inc.

S/UNI-QUAD

DATASHEET

PM5349 S/UNI-QUAD

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

Register 0x07: S/UNI-QUAD Channel Control

Bit	Type	Function	Default
Bit 7	R/W	TFPI_EN	0
Bit 6	R/W	Reserved	0
Bit 5	R/W	RXDINV	0
Bit 4		Unused	X
Bit 3	R/W	PDLE	0
Bit 2	R/W	LLE	0
Bit 1	R/W	SDLE	0
Bit 0	R/W	LOOPT	0

This register controls the timing and high speed loopback features of the S/UNI-QUAD.

LOOPT:

The LOOPT bit selects the source of timing for the transmit section of the channel. When LOOPT is a logic zero, the transmitter timing is derived from input REFCLK (Clock Synthesis Unit) is used. When LOOPT is a logic one, the transmitter timing is derived from the recovered clock. (Clock Recovery Unit).

SDLE:

The SDLE bit enables the serial diagnostic loopback. When SDLE is a logic one, the transmit serial stream is connected to the receive stream. The SDLE and the LLE bits should not be set high simultaneously.

LLE:

The LLE bit enables the S/UNI-QUAD line loopback. When LLE is a logic one, the value on RXD+/- differential inputs is synchronously mapped to the TXD+/- differential outputs, after clock recovery. The SDLE and the LLE bits should not be set high simultaneously.

PDLE:

The PDLE bit enables the parallel diagnostic loopback. When PDLE is a logic one, the transmit parallel stream is connected to the receive stream. The loopback point is between the TPOP and the RPOP blocks. Blocks upstream of the loopback point continue to operate normally. For example line AIS may be inserted in the transmit stream upstream of the loopback point using the TSOP Control register.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 70