GS1672 datasheet(13/116 Pages) SEMTECH

13 / 116 page

GS1672 HD/SD-SDI Serializer with Complete SMPTE

Audio & Video Support

Data Sheet

53623 - 6

July 2011

13 of 116

TDI

Input

COMMUNICATION SIGNAL INPUT.

Signal levels are LVCMOS/LVTTL compatible.

Dedicated JTAG pin.

Test data in.

This pin is used to shift JTAG test data into the device when the

JTAG/HOST pin is LOW.

TMS

Input

COMMUNICATION SIGNAL INPUT.

Signal levels are LVCMOS/LVTTL compatible.

Dedicated JTAG pin.

Test mode start.

This pin is JTAG Test Mode Start, used to control the operation of

the JTAG test when the JTAG/HOST pin is LOW.

E10

CD_VDD

Input Power

Power for the serial digital cable driver. Connect to 3.3V DC analog.

F1, F2, H1,

H2, J1, J2,

J3, K1, K2,

DIN[9:0]

Input

PARALLEL DATA BUS.

Signal levels are LVCMOS / LVTTL compatible.

In 10-bit mode, these pins are not used.

20-bit mode

20BIT/10BIT = HIGH

Chroma data input in SMPTE mode

SMPTE_BYPASS = HIGH

DVB_ASI = LOW

Data input in data through mode

SMPTE_BYPASS = LOW

DVB_ASI = LOW

Not Used in DVB-ASI mode

SMPTE_BYPASS = LOW

DVB_ASI = HIGH

10-bit mode

20BIT/10BIT = LOW

High impedance.

DETECT_TRS

Input

CONTROL SIGNAL INPUT.

Signal levels are LVCMOS / LVTTL compatible.

Used to select external HVF timing mode or TRS extraction timing

mode.

When DETECT_TRS is LOW, the device extracts all internal timing

from the supplied H:V:F or CEA-861 timing signals, dependent on

the status of the TIM861 pin.

When DETECT_TRS is HIGH, the device extracts all internal timing

from TRS signals embedded in the supplied video stream.

TDO

Output

COMMUNICATION SIGNAL OUTPUT.

Signal levels are LVCMOS/LVTTL compatible.

Dedicated JTAG pin.

JTAG Test Data Output.

This pin is used to shift results from the device when the JTAG/HOST

pin is LOW.

F10

RSET

Input

An external 1% resistor connected to this input is used to set the

SDO/SDO output signal amplitude.

G1, H10

IO_VDD

Input Power

Power connection for digital I/O. Connect to 3.3V or 1.8V DC digital.

Table 1-1: Pin Descriptions (Continued)

Number

Name

Timing

Type

Description

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