GS3140 Datasheet, PDF (33/40 Pages) Semtech Corporation – Multi-Rate Adaptive 3G SDI Equalizer

Table 5-1: Register Descriptions (Continued)
Address
Register Name
Parameter Name
CABLE_LENGTH_INDICATOR
RSVD
6_h
STATUS_REG_0
DETECTED_INPUT_RATE
LOS
LOS_FILTER_SET_DELAY
7_h
LOS_FILTER_CONF_
REG_0
LOS_FILTER_CLEAR_DELAY
8_h
LOS_FILTER_CONF_
REG_1
RSVD
LOS_FILTER_DISABLE
Bit
Slice
R/W Reset Description
An 8 bit number representing
cable length in increments of 2.5m
15:8 RO 0_h ⁰⁰h ^{= 0m (minimum value)}
EF_h = ~600m (maximum value)
in accordance with Table 4-1.
7:4 RO — Reserved.
Detected input data rate.
000_b = <125mB/s
001_b = 125mB/s
3:1 RO 1_h 010_b = 270Mb/s
011_b = 1.485Gb/s
100_b = 2.97Gb/s
Note: All other states are invalid.
Loss of Signal (LOS) Indication.
Set to 1 when a qualified signal is
0:0
RO
0_h
present at the input to the device,
as detailed in Section 4.5.
Set to 0 when such signal is not
detected.
15:8 RW
Loss of Signal (LOS) assertion delay,
in increments of approximately
25.9μs to a maximum of
2_{h approximately 6.6ms.}
00_h = 0ms
FF_h = 6.6ms
Loss of Signal de-assertion delay, in
increments of approximately
6.6ms to a maximum of
7:0 RW 1_{h approximately 1.7s.}
00_h = 0s
FF_h = 1.7s
15:1 RW 0_h Reserved. Do not change.
0:0
RW
0_h
Disables Loss of Signal (LOS) Filter
as shown in Figure 4-1.
GS3140
Final Data Sheet
PDS-060939
Rev.1
May 2015
www.semtech.com
33 of 40
Semtech
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