STHDLS101T datasheet(10/26 Pages) STMICROELECTRONICS

10 / 26 page

Pin configuration

STHDLS101T

10/26

number

Name

Type

Function

GND

Power

Ground

SCL_SINK

Output

5 V DDC Clock I/O. Pulled-up by external termination

to 5 V. Connected to SCL_SOURCE through voltage-

limiting integrated NMOS pass-gate

SDA_SINK

I/O

5V DDC Data I/O. Pulled-up by external termination to

5V. Connected to SDA_SOURCE through voltage-

limiting integrated NMOS pass-gate

HPD_SINK

Input

Low-frequency, 0V to 5V (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 160KΩ 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

3.3V±10% DC supply

FUNCTION3

Input

Used for polarity control of the HPD_SOURCE output.

When L, the HPD_SOURCE is an open-drain output

sand when H, the HPD_SOURCE is a buffered output

(O V to VCC)

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-.

Table 2.

Pin description (continued)

Obsolete

Product(s)

- Obsolete

Product(s)

STHDLS101T 数据表(PDF) 10 Page - STMicroelectronics

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STHDLS101T 数据表(PDF) 10 Page - STMicroelectronics

STHDLS101T 数据表(HTML) 10 Page - STMicroelectronics

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