LMH0303 Datasheet, PDF (9/14 Pages) National Semiconductor (TI) – 3 Gbps HD/SD SDI Cable Driver with Cable Detect

SMBus Registers
Address R/W Name
00h R/W ID
01h
R STATUS
02h R/W MASK
TABLE 1. SMBus Registers
Bits Field
7:1 DEVID
0 RSVD
7:3 RSVD
2 TFN
1 TFP
0 LOS
7 SD
6 RSVD
5 PD
4:3 RSVD
2 MTFN
1 MTFP
0 MLOS
Default Description
0010111 Device ID. Writing this register will force the RSTO pin high.
Further accesses to the device must use this 7-bit address.
0 Reserved as 0. Always write 0 to this bit.
00000 Reserved.
0 Termination Fault for SDI.
0: No Termination Fault Detected.
1: Termination Fault Detected.
0 Termination Fault for SDI.
0: No Termination Fault Detected.
1: Termination Fault Detected.
0 Loss Of Signal (LOS) detect at input.
0: No Signal Detected.
1: Signal Detected.
0
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 pin selects
the output edge rate as follows:
0: HD edge rate.
1: SD edge rate.
0 Reserved as 0. Always write 0 to this bit.
0 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.
00 Reserved as 00. Always write 00 to these bits.
0 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.
0 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.
0 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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