GS6151 Datasheet, PDF (67/77 Pages) Semtech Corporation – Multi-Rate 6G UHD-SDI

Table 5-1: Register Descriptions - Standard Address Space (Continued)
Address Register Name Parameter Name
Bit
Slice
R/W
Reset
Value
Description
Selects measurement interval in multiples of
pre-divider cycles. The measurement time
for a single phase is:
PRBS_MON_MEASURE_PREDIVIDER *
3D_h
PRBS_CTRL_3
PRBS_MON_MEASUREMENT_
TIME
15:0
(PRBS_MON_MEASUREMENT_TIME + 1) *
RW A8B_{h (1/108MHz).}
The default value results in a 100μs
measurement time or roughly 12.8ms for a
full scan of 128 phases. The maximum
measurement time is ~1.25 seconds.
PRBS error count threshold for good/bad
BER for automatic eye scan. A measurement
is considered to pass if
3E_h
PRBS_CTRL_4
PRBS_MON_PRBS_ERROR_
THRESHOLD
15:0
RW
3_h
PRBS_ERROR_COUNT is less than or equal to
this threshold. It fails if the count is greater.
The default threshold corresponds to a bit
error rate of 6.67E-6 at 6G using the default
measurement interval of 100μs.
RSVD
15:11 RW 0_h Reserved. Do not change.
3F_h
PRBS_CTRL_5 PRBS_MON_MANUAL_PHASE 10:4 RW
0_h
Phase setting for manual timed or
continuous scans
RSVD
3:0 RW 3_h Reserved. Do not change.
PRBS_MON_CLEAR
00_b: No effect
1:1
RW
0_h ^{01b: Manually clear error indication}
Only used when
PRBS_MON_FORCE_CLEAR = 1
40_h
PRBS_CTRL_6
00_b: Manual error clearing is disabled
01_b: Enables error clearing through
PRBS_MON_FORCE_CLEAR
0:0
RW
0_h ^{PRBS_MON_CLEAR}
Allows host interface to directly control the
PRBS error counting algorithm, bypassing
the PRBS_MON_CTRL state machine.
GS6151
Final Data Sheet
PDS-060389
Rev.4
August 2015
www.semtech.com
67 of 77
Semtech
Proprietary & Confidential