Datasheet

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DESCRIPTION

TMDS442

SLLS757A – AUGUST 2006 – REVISED MARCH 2007

SOURCE SELECTION LOOKUP

CONTROL REGISTER BITS I/O SELECTED HOT PLUG DETECT STATUS

SB SA OE I2CEN Y/Z SCL_SINK HPD1 HPD2 HPD3 HPD4

SDA_SINK

L L L H A1/B1 SCL1 HPD_SINK L L L

SDA1

L H L H A2/B2 SCL2 L HPD_SINK L L

SDA2

H L L H A3/B3 SCL3 L L HPD_SINK L

SDA3

H H L H A4/B4 SCL4 L L L HPD_SINK

SDA4

X X L L A/B Z HPD_SINK is transmitted to corresponding source port

X X H H Z SCL HPD_SINK is transmitted to corresponding source port

SDA

X X H L Z Z HPD_SINK is transmitted to corresponding source port

SINK PRIORITY CONTROL

(SA1 = SA2 = Low, SB1 = SB2 = Low, OE1 = OE2 = Low, I2CEN1 = I2CEN2 = High)

SINK PRIORITY SINK PORT 1 SINK PORT 2

SP Y1/Z1 SCL_SINK1/SDA_SINK1 Y2/Z2 SCL_SINK2/SDA_SINK2 HPD1

L A1/B1 SCL1/SDA1 A1/B1 Z HPD_SINK1

H A1/B1 Z A1/B1 SCL1/SDA1 HPD_SINK2

5V_PWR STATUS

(SA = Low, SB = Low, OE = Low, I2CEN = High)

CONTROL STATUS SOURCE

I/O SELECTED HOT PLUG DETECT STATUS

PLUG IN STATUS

GE 5V_EN 5V_PWR1 Y/Z SCL_SINK/SDA_SINK HPD1 HPD2 HPD3 HPD4

L H H A1/B1 SCL1/SDA1 HPD_SINK L L L

L H L Z Z L L L L

L L X A1/B1 SCL1/SDA1 HPD_SINK L L L

H X H A1/B1 SCL1/SDA1 HPD_SINK L L L

H X L Z Z L L L L

C POINTER REGISTER

P7 P6 P5 P4 P3 P2 P1 P0

0 0 0 0 0 0 X X

01, Sink port 1 configuration register

10, Sink port 2 configuration register

11, Source plug-in status register

Power up default is 0000 0011

Product Folder Link(s): TMDS442