LMH0303 Datasheet, PDF (13/27 Pages) National Semiconductor (TI) – 3 Gbps HD/SD SDI Cable Driver with Cable Detect

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Register Maps (continued)
ADDRESS
0x03
R/W
NAME
R/W DIRECTION
0x04
R/W OUTPUT
LMH0303
SNLS285H – APRIL 2008 – REVISED MAY 2016
Table 1. SMBus Registers (continued)
BITS
FIELD
7 HDTFThreshLSB
6 SDTFThreshLSB
5:3 RSVD
2 DTFN
1 DTFP
0 DLOS
7:5 HDTFThresh
4:0 AMP
DEFAULT
1
1
000
0
0
0
100
10000
DESCRIPTION
Least Significant Bit for HDTFThresh
detection threshold. Combines with
HDTFThresh bits in register 0x04.
Least Significant Bit for SDTFThresh
detection threshold. Combines with
SDTFThresh bits in register 0x05.
Reserved as 000. Always write 000 to these
bits.
Direction of TFN that affects FAULT pin (when
not masked).
0: TFN=1 will cause FAULT to be 0 (when the
condition is not masked off).
1: TFN=0 will cause FAULT to be 0 (when the
condition is not masked off).
Direction of TFP that affects FAULT pin (when
not masked).
0: TFP=1 will cause FAULT to be 0 (when the
condition is not masked off).
1: TFP=0 will cause FAULT to be 0 (when the
condition is not masked off).
Direction of LOS that affects FAULT pin
(when not masked).
0: LOS=0 will cause FAULT to be 0 (when the
condition is not masked off).
1: LOS=1 will cause FAULT to be 0 (when the
condition is not masked off).
Sets the Termination Fault threshold for SDO,
when SD is set to HD rates (0). Combines
with HDTFThreshLSB in register 0x03 (default
for combined value is 1001).
SDO output amplitude in roughly 5 mV steps.
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