TLK3132 Datasheet, PDF (42/103 Pages) Texas Instruments – 2-Channel Multi-Rate Transceiver

TLK3132
2-Channel Multi-Rate Transceiver
SLLS956 – DECEMBER 2008
Table 2-38. SERDES_TX1_CONFIG⁽¹⁾
BIT(s)
36876.11:9
36876.8
36876.7:4
36876.3
36876.1
36876.0
ADDRESS: 0x900C
DEFAULT: 0x0001
NAME
DESCRIPTION
SWING
Transmitter Output swing control for SERDES transmitter.
Refer to Table 2-40: Output Swing Control
If swing is set to 750mV or more, CM bit (36876.8) needs to be set to 1.
If swing is set to 625 mV or less, CM bit (36876.8) needs to be set to 0.
CM
1 = Applicable for SWING settings 750 mV or more.
0 = Applicable for SWING settings 625 mV or less.
DE-EMPHASIS
Transmitter Differential output De-emphasis control
Refer to Table 2-39: Transmit De-emphasis Control
INVPAIR
Transmitter Polarity
1 = Inverted polarity. TXP considered negative data and TXN considered
positive data
0 = Normal polarity. TXP considered positive data and TXN considered
negative data
ENTEST
1= Enables test modes specified in TESTCFG (Register 0x9011)
ENTX
1 = Enables transmitter
0 = Disables transmitter
(1) These are SERDES transmitter control bits for channel 1.
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ACCESS
RW
RW
RW
RW
RW
RW
VALUE
0000
0001
0010
0011
0100
0101
0110
0111
Table 2-39. Transmit De-Emphasis Control
AMPLITUDE REDUCTION
%
dB
0
0
4.76
–0.42
9.52
–0.87
14.28
–1.34
19.04
–1.83
23.8
–2.36
28.56
–2.92
33.32
–3.52
36874/36876[7:4]
VALUE
1000
1001
1010
1011
1100
1101
1110
1111
AMPLITUDE REDUCTION
%
dB
38.08
–4.16
42.85
–4.86
47.61
–5.61
52.38
–6.44
57.14
–7.35
61.9
–8.38
66.66
–9.54
71.42
–10.87
VALUE
000
001
010
011
Table 2-40. Output Swing Control
36874/36876[11:9]
AMPLITUDE (mVdfpp)
VALUE
125
100
250
101
500
110
625
111
AMPLITUDE (mVdfpp)
750
1000
1250
1375
42
Detailed Description
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