Datasheet

LMH0395
www.ti.com SNLS323L –AUGUST 2010–REVISED APRIL 2013
Table 1. SPI Registers (continued)
Address R/W Name Bits Field Default Description
02h R/W Launch Amplitude 7 Launch Amplitude Control 0 Launch amplitude optimization
Control setting.
0: Normal optimization with no
external attenuation (800 mV
P-P
launch amplitude).
1: Optimized for 6 dB external
attenuation (400 mV
P-P
launch
amplitude).
6:0 Reserved 1101000 Reserved as 1101000. Always
write 1101000 to these bits.
03h R/W MUTE
REF
7 Driver 1 Disable 0 SDO1_DISABLE pin has
precedence over this register
setting; must set
SDO1_DISABLE pin low first to
allow control of Driver 1 Disable
via this register bit.
0: Output driver 1 (SDO1,
SDO1) enabled.
1: Output driver 1 (SDO1,
SDO1) disabled.
6 Driver 0 Disable 0 0: Output driver 0 (SDO0,
SDO0) enabled.
1: Output driver 0 (SDO0,
SDO0) disabled.
5 MUTE
REF
Mode 0 0: Use MUTE
REF
pin.
1: Use digital MUTE
REF
.
4:0 Digital MUTE
REF
Setting 11111 Digital MUTE
REF
(10m per
step).
00000: Mute when cable (EQ
boost) ≥ 10m.
......
01111: Mute when cable (EQ
boost) ≥ 160m.
......
11111: Never mute.
04h R Device ID 7:6 Reserved 00 Reserved.
5:4 EQ ID 10 00: LMH0384 device.
01: LMH0394 device.
10: LMH0395 device.
11: Reserved.
3:0 Die Revision 0011 Die revision.
05h R Rate Indicator 7:6 Reserved 00 Reserved.
5 Rate Indicator 0: SD.
1: 3G/HD.
4:0 Reserved 11000 Reserved.
06h R Cable Length Indicator 7:0 Cable Length Indicator Cable Length Indicator (CLI),
with 10% accuracy.
00000000: Short cable.
......
11110111: Maximum cable.
11111000: Reserved.
......
11111111: Reserved.
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