LMH0303_13 Datasheet, PDF (10/19 Pages) Texas Instruments – 3 Gbps HD/SD SDI Cable Driver with Cable Detect

LMH0303
SNLS285G – APRIL 2008 – REVISED APRIL 2013
SMBUS REGISTERS
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Address
00h
R/W Name
R/W ID
01h
R STATUS
02h
R/W MASK
Table 1. SMBus Registers
Bits Field
7:1 DEVID
Default
0010111
0 RSVD
7:3 RSVD
2 TFN
0
00000
0
1 TFP
0
0 LOS
0
7 SD
0
6 RSVD
0
5 PD
0
4:3 RSVD
00
2 MTFN
0
1 MTFP
0
0 MLOS
0
Description
Device ID. Writing this register will force the
RSTO pin high. Further accesses to the
device must use this 7-bit address.
Reserved as 0. Always write 0 to this bit.
Reserved.
Termination Fault for SDI.
0: No Termination Fault Detected.
1: Termination Fault Detected.
Termination Fault for SDI.
0: No Termination Fault Detected.
1: Termination Fault Detected.
Loss Of Signal (LOS) detect at input.
0: No Signal Detected.
1: Signal Detected.
SD Rate select bit. If the SD/HD pin is set to
V_CC, it overrides this bit. With the SD/HD pin
set to ground, this bit selects the output edge
rate as follows:
0: HD edge rate.
1: SD edge rate.
Reserved as 0. Always write 0 to this bit.
Power Down for SDO output stage. If the
ENABLE pin is set to ground, it overrides this
bit. With the ENABLE pin set to V_CC, PD
functions as follows:
0: SDO active.
1: SDO powered down.
Reserved as 00. Always write 00 to these bits.
Mask TFN from affecting FAULT pin.
0: TFN=1 will cause FAULT to be 0.
1: TFN=1 will not affect FAULT; the condition
is masked off.
Mask TFP from affecting FAULT pin.
0: TFP=1 will cause FAULT to be 0.
1: TFP=1 will not affect FAULT; the condition
is masked off.
Mask LOS from affecting FAULT pin.
0: LOS=0 will cause FAULT to be 0.
1: LOS=0 will not affect FAULT; the condition
is masked off.
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