GS3140 Datasheet, PDF (32/40 Pages) Semtech Corporation – Multi-Rate Adaptive 3G SDI Equalizer

Table 5-1: Register Descriptions (Continued)
Address
Register Name
Parameter Name
RSVD
OUTPUT_SWING
4_h
OUT_CONF_REG_0
OUTPUT_SWING_ENABLE
DEEMPHASIS_DELAY
4_h
OUT_CONF_REG_0
DEEMPHASIS_LEVEL
RSVD
4_h
OUT_CONF_REG_0
DEEMPHASIS_ENABLE
RSVD
RSVD
MANUAL_OUTPUT_DISABLE
5_h
OUT_CONF_REG_1
AUTO_OUTPUT_MUTE
MUTE
Bit
Slice
R/W Reset Description
15:15 RW
14:11 RW
0_h Reserved. Do not change.
Sets the output swing level
B_h (amplitude) when the feature is
enabled. See Section 4.9.1.
10:10 RW
9:9 RW
8:6 RW
When set to 1, enables overriding
of the default output swing with
the value written in the
0_h ^{OUTPUT_SWING bits.}
When set to 0, the output swing
will default to a setting of
OUTPUT_SWING = B_h.
Set the de-emphasis delay when
DEEMPHASIS_ENABLE is set to 1.
0_{h 0b = 100ps}
1_b = 200ps
Set the de-emphasis level when
0_h DEEMPHASIS_ENABLE is set to 1.
See Table 4-3.
5:2 RW 0_h Reserved. Do not change.
Enable or disable the de-emphasis
delay and level set using the
DEEMPHASIS_DELAY and
1:1 RW 0_{h DEEMPHASIS_LEVEL bits.}
0_b = De-emphasis disabled
1_b = De-emphasis enabled
0:0 RW 0_h Reserved. Do not change.
15:3 RW 0_h Reserved. Do not change.
2:2
RW
0_h
When set to 1, powers down the
output buffer.
Enable automatic muting of the
1:1
RW
0_h
output buffer (equivalent to
setting MUTE = 1) when LOS is
asserted (set to 1).
When set to 1, latches the two
halves of the output buffer at
opposing levels.
0:0
RW
0_h
One will be set to the level of
VCC_O and the other will be set to
VCC_O – swing amplitude (swing
level set in the OUTPUT_SWING
bits of OUT_CONF_REG_0).
GS3140
Final Data Sheet
PDS-060939
Rev.1
May 2015
www.semtech.com
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