STDEV003ABTR datasheet(8/41 Pages) STMICROELECTRONICS

8 / 41 page

Pin configuration

STDVE003A

8/41

GND

Power

Ground

VCC

Power

Supply voltage (3.3 V ± 5%)

REXT

Analog

Connect to GND through a 4.7 K

Ω ± 1% precision

reference resistor. Sets the output current to

generate the output voltage compliant with TMDS

EQ_BOOST

Input

Provides equalizer boost function. Set to L for

short cables and H for long cables.

DDC_Y_PWR

Power

External power to connect the pull-up resistor on

DDC Y ports. Connect to GND if unused.

21, 23

S1,S2,S3

Input

Source select inputs

GND

Power

Ground

25, 26

Y4, Z4

Output,

TMDS

Channel 4 differential outputs

VCC

Power

Supply voltage (3.3 V ± 5%)

28, 29

Y3, Z3

Output,

TMDS

Channel 3 differential outputs

GND

Power

Ground

31, 32

Y2, Z2

Output,

TMDS

Channel 2 differential outputs

VCC

Power

Supply voltage (3.3 V ± 5%)

34, 35

Y1, Z1

Output,

TMDS

Channel 1 differential outputs

GND

Power

Ground

GND

Power

Ground

SCL_SINK

I/O

Sink side DDC bus clock line

SDA_SINK

I/O

Sink side DDC bus data line

HPD_SINK

Input

Sink side hot plug detector input

High: 5 V power signal asserted from source to

sink and EDID is ready.

Low: No 5 V power signal is asserted from source

to sink or EDID is not ready.

DDC_3_PWR

Power

External power to connect the pull-up resistor on

DDC C ports. Connect to GND if unused.

OE_N

Input

Output enable, active low

VCC

Power

Supply voltage (3.3 V ± 5%)

HPD3

Output

Port 3 hot plug detector output. Open drain output.

Connect an external resistor according to the

HDMI specification.

SDA3

I/O

Port 3 DDC bus data line

SCL3

I/O

Port 3 DDC bus clock line

Table 2.

Pin description (continued)

Pin number

Pin name

Type

Function

STDEV003ABTR Datasheet(PDF) 8 Page - STMicroelectronics

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