
DATASHEET
PM5349 S/UNI-QUAD
ISSUE 6 | SATURN USER NETWORK INTERFACE | |
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Register 0x07:
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
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
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 | 70 |