GS4900B datasheet(13/102 Pages) SEMTECH

13 / 102 page

GS4901B/GS4900B SD Clock and Timing Generator

with GENLOCK

Data Sheet

37703 - 4

December 2009

13 of 102

TIMING_OUT_2

Synchronous

with PCLK1

~ PCLK3

Output

TIMING SIGNAL OUTPUT

Signal levels are LVCMOS/LVTTL compatible.

Selectable timing output.

Selectable from: H sync; H blanking; V sync; V blanking; F sync; F

digital; Display Enable; 10 field ID (film cadence); AFS video/audio

timing (GS4901B only); USER_1~4.

See Section 1.5 on page 23 for signal descriptions.

NOTE: Default output is H blanking.

The current drive capability of this pin may be set high or low via

designated registers in the host interface. By default, the current

drive will be low.

This signal will be high impedance when VID_STD[5:0] = 00h.

TIMING_OUT_3

Synchronous

with PCLK1

~ PCLK3

Output

TIMING SIGNAL OUTPUT

Signal levels are LVCMOS/LVTTL compatible.

Selectable timing output.

Selectable from: H sync; H blanking; V sync; V blanking; F sync; F

digital; Display Enable; 10 field ID (film cadence); AFS video/audio

timing (GS4901B only); USER_1~4.

See Section 1.5 on page 23 for signal descriptions.

NOTE: Default output is V Sync.

The current drive capability of this pin may be set high or low via

designated registers in the host interface. By default, the current

drive will be low.

This signal will be high impedance when VID_STD[5:0] = 00h.

TIMING_OUT_4

Synchronous

with PCLK1

~ PCLK3

Output

TIMING SIGNAL OUTPUT

Signal levels are LVCMOS/LVTTL compatible.

Selectable timing output.

Selectable from: H sync; H blanking; V sync; V blanking; F sync; F

digital; Display Enable; 10 field ID (film cadence); AFS video/audio

timing (GS4901B only); USER_1~4.

See Section 1.5 on page 23 for signal descriptions.

NOTE: Default output is V blanking.

The current drive capability of this pin may be set high or low via

designated registers in the host interface. By default, the current

drive will be low.

This signal will be high impedance when VID_STD[5:0] = 00h.

Table 1-1: Pin Descriptions (Continued)

Number

Name

Timing

Type

Description

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