STHDLS101 datasheet(9/25 Pages) STMICROELECTRONICS

9 / 25 page

STHDLS101

Pin configuration

9/25

number

Name

Type

Function

HPD_SINK

Input

Low-frequency, 0 to 5 V (nominal) input signal. This

signal comes from the HDMI connector. Voltage high

indicates “plugged” state; voltage low indicates

“unplugged” state. HPD_SINK is pulled down by an

integrated 160 KΩ pull-down resistor.

GND

Power

Ground

DDC_EN

Input

Enables bias voltage to the DDC pass-gate level shifter

gates. (May be implemented as a bias voltage

connection to the DDC pass-gate themselves).

DDC_EN

Pass-gate

0 V

Disabled

3.3 V

Enabled

VCC33

Power

3.3 V ± 10% DC supply

FUNCTION3

Vendor-specific

control or test

pins

Function pins are to enable vendor-specific features or

test modes.

For normal operation, these pins are tied to GND or

VCC33.

For consistent interoperability, GND is the preferred

default connection for these signals.

FUNCTION4

Vendor-specific

control or test

pins

Function pins are to enable vendor-specific features or

test modes.

For normal operation, these pins are tied to GND or

VCC33.

For consistent interoperability, GND is the preferred

default connection for these signals.

GND

Power

Ground

GND

Power

Ground

IN_D1-

Input

Low-swing differential input from GMCH PCIE outputs.

IN_D1- makes a differential pair with IN_D1+.

IN_D1+

Input

Low-swing differential input from GMCH PCIE outputs.

IN_D1+ makes a differential pair with IN_D1-.

VCC33

Power

3.3 V±10% DC supply

IN_D2-

Input

Low-swing differential input from GMCH PCIE outputs.

IN_D2- makes a differential pair with IN_D2+.

IN_D2+

Input

Low-swing differential input from GMCH PCIE outputs.

IN_D2+ makes a differential pair with IN_D2-.

GND

Power

Ground

IN_D3-

Input

Low-swing differential input from GMCH PCIE outputs.

IN_D3- makes a differential pair with IN_D3+.

IN_D3+

Input

Low-swing differential input from GMCH PCIE outputs.

IN_D3+ makes a differential pair with IN_D3-.

Table 2.

Pin description (continued)

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