
PM5317 SPECTRA-9953 Telecom Standard Product Data Sheet
Release
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000741, Issue 5
134
Register 0001H: SP9953 Receive Configuration 1
Bit
Type
Function
Default
Bit 15
Unused
Bit 14
R/W
ROHI_RST_OOF_EN
0
Bit 13
R/W
ROHI_RESET[4]
0
Bit 12
R/W
ROHI_RESET[3]
0
Bit 11
R/W
ROHI_RESET[2]
0
Bit 10
R/W
ROHI_RESET[1]
0
Bit 9
R/W
DCMP_SAMPLE_DIS
0
Bit 8
R/W
SYNC_ERR_POL
0
Bit 7
R/W
Unused
0
Bit 6
R/W
DFP_DISABLE
0
Bit 5
R/W
AFP_DISABLE
0
Bit 4
R/W
DFP_ON_AFP
0
Bit 3
R/W
AFP_ON_DFP
0
Bit 2
R/W
Reserved
0
Bit 1
R/W
RDDS
0
Bit 0
R/W
Reserved
0
The Receive Configuration Register is provided at SP9953 Read/Write Address 01H.
RDDS
The receive disable de-scrambling (RDDS) bit disables the de-scrambling of the input data
stream. When a logic 1 is written to RDDS, the input data stream is not de-scrambled.
When a logic 0 is written to RDDS, the input data stream is de-scrambled.
AFP_ON_DFP
The AFP_ON_DFP configures the SPECTRA-9953 to ignore DFP and use AFP as a frame
pulse on the drop side. When set to 1, external DFP pulses are ignored: AFP and
AFPDLY[13:0] determine the timing on the drop bus. When set to 0, the DFP pin operates
normally.
DFP_ON_AFP
The DFP_ON_AFP configures the SPECTRA-9953 to ignore AFP and use DFP as a frame
pulse on the add side. When set to 1, external AFP pulses are ignored: DFP and
AFPDLY[13:0] determine the timing on the Add bus. Note that AFPDLY[13:0] is still used.
. When set to 0, the AFP pin operates normally.