GS1670 datasheet(39/126 Pages) SEMTECH

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GS1670 HD/SD SDI Receiver

Data Sheet

53831 - 2

September 2012

39 of 126

4.11 H:V:F Timing Signal Generation

The GS1670 extracts critical timing parameters from the received TRS words.

Horizontal blanking (H), Vertical blanking (V), and Field odd/even (F) timing are output

on the STAT[2:0] pins by default.

Using the H_CONFIG bit in the host interface, the H signal timing can be selected as one

of the following:

1. Active line blanking (H_CONFIG = LOW) - the H output is HIGH for the horizontal

blanking period, including the EAV TRS words.

2. TRS based blanking (H_CONFIG = HIGH) - the H output is set HIGH for the entire

horizontal blanking period as indicated by the H bit in the received TRS signals.

The timing of these signals is shown in the figures below.

NOTE: Both 8-bit and 10-bit TRS words are identified by the device.

Figure 4-5: H:V:F Output Timing - HDTV 20-bit Mode

Figure 4-6: H:V:F Output Timing - HDTV 10-bit Mode

VIDEO ERROR

0111

−

AUDIO ERROR

1000

−

EDH DETECTED

1001

−

CARRIER DETECT

1010

−

RATE_DET

1011

−

NOTE:

Each of the STAT[5:0] pins are configurable individually using the register bits in the host interface; STAT[5:0]_CONFIG (008h/009h).

Table 4-8:Output Signals Available on Programmable Multi-Function Pins (Continued)

Status Signal

Selection Code

Default Output Pin

PCLK

LUMA DATA

CHROMA DATA

000

3FF

000

3FF

XYZ (SAV)

000

3FF

000

3FF

XYZ (SAV)

XYZ (EAV)

000

3FF

000

PCLK (HD)

MULTIPLEXED Y’CbCr DATA (HD)

000

3FF

000

XYZ (EAV)

MULTIPLEXED Y’CbCr DATA (HD)

PCLK (HD)

H S IGN A L T IM IN G :

H_ C O NF IG = L O W

H _ C ONF IG = H IGH

HVF T IM IN GAT SAV

HVF T IM IN GAT EAV

XYZ (EAV)

XYZ (SAV)

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