ISL54100A_14 Datasheet, PDF (9/21 Pages) Intersil Corporation – TMDS Regenerators with Multiplexers

ISL54100A, ISL54101A, ISL54102A
Register Listing
ADDRESS REGISTER (DEFAULT VALUE)
0x00
Device ID (read only)
0x01
Channel Activity Detect (read only)
0x02
Channel Selection (0x0C)
BIT(S) FUNCTION NAME
DESCRIPTION
3:0 Device Revision
1 = initial silicon, 2 = second revision, etc.
7:4 Device ID
3 = ISL5410xA
0 Channel A Active
0: TMDS clock not present on Channel A
1: TMDS clock detected on Channel A
1 Channel B Active
0: TMDS clock not present on Channel B
1: TMDS clock detected on Channel B
2 Channel C Active
0: TMDS clock not present on Channel C
1: TMDS clock detected on Channel C
3 Channel D Active
0: TMDS clock not present on Channel D
1: TMDS clock detected on Channel D
1:0 Channel Select
Selects the input channel for the mux. These 2 bits are Read
Only if Auto Channel Select is enabled.
0: Channel A selected
1: Channel B selected
2: Channel C selected
3: Channel D selected
2 Auto Channel Select 0: Manual Channel Select (using bits 0 and 1).
1: Auto Channel Select. Mux always selects the active
channel with the highest priority. A = 1st (highest), B = 2nd,
C = 3rd, D = 4th (lowest) priority.
An active channel is a channel that has clock activity on its
TMDS clock lines. If no channels are active, the A channel
is selected. (default)
3 Hardware Channel 0: Software channel selection (using bits 0-2 of this register)
Select
1: Hardware channel selection (using “Auto Channel Select”
and “CH Sel 0/1” external pins) (default)
4 Reset
Full chip reset. Write a 1 to reset. Will set itself to 0 when
reset is complete.
5 Power-down
0: Normal Operation
1: Puts the chip in a minimal power consumption mode,
turning off all TMDS outputs and open-circuiting all TMDS
inputs.
This bit is OR'ed with the Power-down input pin. If either is
set, the chip will enter power-down. Serial
I/O stays operational in PD mode.
Note: When exiting Power-down, a termination resistor
Recalibration cycle must be run to re-trim the termination
resistors (see register 0x03[7]).
9
FN6725.0
June 17, 2008