STV2310 datasheet(65/112 Pages) STMICROELECTRONICS

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STV2310

DDECCONTC

ZOOMOUT_FAC

[1:0]

Zoom-out Factor (LSBs). See register

DDECCONT9.

ZOOMIN_OFFSE

T[1:0]

Zoom-in Offset (LSBs). See register

DDECCONTA.

ZOOMOUT_EN

Zoom-out Function Enable

When both Zoom-in and Zoom-out functions are enabled, the STV2310 is in Panorama mode. In Panorama

mode, the ZOOMIN_FACT, the ZOOMOUT_FACT and the ZOOMIN_OFFSET are used. The

ZOOMIN_FACT determines the zoom-in factor at the left and right edges of the picture. The

ZOOMOUT_FACT determines the zoom-out factor at the center of the picture. The ZOOMIN_OFFSET

determines the border width where the zoom factor increases from the zoom-in factor to the zoom-out

factor, starting from the left edge (respectively, the border width finishing on the right edge where the zoom

factor decreases from the zoom-out factor to the zoom-in factor).

Correct programming is left to the user without hardware check. For programming verification, the following

formula must be checked: Zt x (Zout - Zin) = N x (Zout -1)

where Zin = ZOOMIN_FACT; Zout = ZOOMOUT_FACT; Zt = ZOOMIN_OFFSET; N = Number of Y pixels

per line (720 in Normal Pixel mode, 640 or 768 in Square Pixel mode)

0: Zoom-out function is disabled. (Default)

1: Zoom-out function is enabled.

ZOOMIN_EN

Zoom-in Function Enable

0: Zoom-in function is disabled. (Default)

1: Zoom-in function is enabled.

Address (hex): 0Ch

Reset Value (bin): 0000 0000

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

SPC_CORING[1:0]

ALL_NTSC_HUE_VALUE[5:0]

Bit Name

Function

SPC_CORING

[1:0]

Coring Function for all standards

The Coring function is operational for all standards. When activated, the demodulated color components (Cr

and Cb) close to 128 are replaced by 128.

00: No action. (Default)

01: 127 to 129 rounded to 128 (dynamic range of ± 1 LSB)

10: 125 to 131 rounded to 128 (dynamic range of ± 3 LSBs)

11: 123 to 133 rounded to 128 (dynamic range of ± 5 LSBs)

ALL_NTSC_HUE

_VALUE[5:0]

NTSC Hue Control Function

The Hue Control mechanism is only operational when the NTSC or NTSC M standard has been detected

(or being tried by the standard identification algorithm). The hue is a fixed offset in a demodulation angle.

The offset is only operational in the active line. There are 63 steps of approximately 1.4 degrees each,

allowing an offset of between -45° and +43.6°.

Coded in 2’s complement (0 = No Hue)

Bit Name

Function

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