STV2310 datasheet(60/112 Pages) STMICROELECTRONICS

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STV2310

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DDECCONT2

Bit Name

Function

BLANKMODE

[1:0]

Blanking Mode

The blanking mode defines how the clamp mechanism will perform. The blanking code is the ADC output

code used by the clamp mechanism as target In the Auto mode and depends on the vertical sync

identification result (50 or 60 Hz). The blanking code is determined in the 2 other modes.

00: Auto (50 Hz = Code 256, 60 Hz = Code 244) (Default)

01: Blanking code 256 (Sync tip 43 IRE)

10: Blanking code 244 (Sync tip 40 IRE)

11: Auto (Same as 00)

AUTOSTD[5:0]

Auto Identification Table (Seventh and Eighth Standards)

The STV2310 can search for one of the TV standards programmed in the Automatic Standard Identification

Table (split over several registers). The Automatic Standard Identification Table has 8 entries with an order

of priority for the search. Note that in the default configuration, "No Standard" is programmed in the seventh

and eigth entries.

000: PAL BGDHI100: PAL N

001: SECAM 101 NTSC 4.43

010: NTSC M110 or 111: No Standard

011: PAL M

Address (hex): 02h

Reset Value (bin): 0100 1001

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PEDESTAL_

REMOVE

AUTOSTD[11:6]

Bit Name

Function

Bit 7

Reserved: Must be set to 0.

PEDESTAL_

REMOVE

Pedestal Remove in Input signal

The PEDESTAL_REMOVE bit describes the input signal (whether a pedestal is present in the input signal

or not). This information is entered by the user. Gain and offset on the Y processing will be different

according to that bit. The pedestal remove function is active for all 50- and 60-Hz input standards. Note that

by default, it is considered that there is no pedestal in NTSC M inputs.

The pedestal remove function operates both on the CVBS and RGB flows.

0: Pedestal is present in input signal.

1: Pedestal is not present in input signal. (Default)

AUTOSTD[11:6]

Auto Identification Table (Fifth and Sixth Standards)

Fifth and Sixth Standards of the Automatic Standard Identification Table. See register

DDECCONT1.

001 001: SECAM (Default)

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