GS6151 Datasheet, PDF (57/77 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
DDO1_SWING_BYPASS
15:12 RW
Differential swing (amplitude) control for
unlocked signals output on DDO1 (when
CDR is operating in BYPASS mode). For
3_h details refer to Section 4.5.3.
Also applies when the device is not locked.
Takes precedence over rate-specific swing
controls
1F_h
DRIVER_CONTROL_
REG_6
DDO1_SWING_MUTE
11:8 RW
Differential static amplitude control for
DDO1 when the output is muted. For details
3_h refer to Section 4.5.3.
Takes precedence over rate-specific swing
controls and bypass swing control
DDO1_SWING_5G94
Differential swing (amplitude) control for
7:4 RW 3_h 5.94Gb/s (6G UHD-SDI) signals output on
DDO1. For details refer to Section 4.5.3.
DDO1_SWING_2G97
Differential swing (amplitude) control for
3:0 RW 3_h 2.97Gb/s (3Gb/s SDI) signals output on
DDO1. For details refer to Section 4.5.3.
RSVD
15:2 RW 0_h Reserved. Do not change.
20_h
CDR_BYPASS
MANUAL_BYPASS
AUTO_BYPASS
Used to manually bypass the retiming block
in the CDR.
00_b: Re-timer not bypassed
1:1
RW
0_h 01_b: Re-timer bypassed
The assertion of MANUAL_BYPASS takes
precedence irrespective of the setting of
AUTO_BYPASS
Selects between automatic and manual
bypass of the retiming block when the CDR
is not locked.
0:0
RW
1_h
00_b: Auto-Bypass is disabled
01_b: Auto-Bypass is enabled
Even if AUTO_BYPASS is asserted, the
assertion of MANUAL_BYPASS will still cause
the re-timer to be bypassed.
RSVD
15:11 RW 0_h Reserved. Do not change.
Signal polarity invert at output of
OUTPUT_POLARITY_INVERT 10:10 RW
CDR/bypass.
0_{h 00b: Not inverted}
01_b: Inverted
21_h
PD_CONTROL
RSVD
9:6 RW 2_h Reserved. Do not change.
RSVD
5:1 RW 0_h Reserved. Do not change.
Signal polarity invert at input to CDR/bypass.
INPUT_POLARITY_INVERT
0:0
RW
0_h 00_b: Not inverted
01_b: Inverted
GS6151
Final Data Sheet
PDS-060389
Rev.4
August 2015
www.semtech.com
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Semtech
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