SAA7127 Просмотр технического описания (PDF) - Philips Electronics

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производитель

SAA7127

Digital video encoder

Philips Electronics 

Philips Semiconductors

Digital video encoder

Product specification

SAA7126H; SAA7127H

Table 11 Subaddresses 38H and 39H

DATA BYTE

GY0 to GY4

GCD0 to GCD4

DESCRIPTION

Gain luminance of RGB (CR, Y and CB) output, ranging from (1 − 16⁄32) to (1 + 15⁄32).

Suggested nominal value = −6 (11010b), depending on external application.

Gain colour difference of RGB (CR, Y and CB) output, ranging from (1 − 16⁄32) to (1 + 15⁄32).

Suggested nominal value = −6 (11010b), depending on external application.

Table 12 Subaddress 3AH

DATA BYTE

MP2C1

MP2C2

CSYNC

DEMOFF

SYMP

CBENB

LOGIC

LEVEL

0

1

0

1

0

1

0

1

0

1

0

1

DESCRIPTION

input data is twos complement from MP1 input port (encoder path)

input data is straight binary from MP1 input port; default after reset

input data is twos complement from MP2 input port (RGB path)

input data is straight binary from MP2 input port; default after reset

If VBSEN0 = 0, CVBS output signal is switched to CVBS DAC.

If VBSEN0 = 1, luminance output signal is switched to CVBS DAC; default after reset.

advanced composite sync is switched to CVBS DAC

YCBCR-to-RGB dematrix is active; default after reset

YCBCR-to-RGB dematrix is bypassed

horizontal and vertical trigger is taken from RCV2 and RCV1 respectively; default after reset

horizontal and vertical trigger is decoded out of “CCIR 656” compatible data at MP port

data from input ports is encoded; default after reset

colour bar with fixed colours is encoded

Table 13 Subaddress 54H

DATA BYTE

EDGE1

EDGE2

CCIRS

VPSEN

LOGIC

LEVEL

0

1

0

1

0

1

0

1

DESCRIPTION

MP1 data is sampled on the rising clock edge; default after reset

MP1 data is sampled on the falling clock edge

MP2 data is sampled on the rising clock edge; default after reset

MP2 data is sampled on the falling clock edge

If SYMP = 1, horizontal and vertical trigger is decoded out of “CCIR 656” compatible data at

MP2 port; default after reset.

If SYMP = 1, horizontal and vertical trigger is decoded out of “CCIR 656” compatible data at

MP1 port.

video programming system data insertion is disabled; default after reset

video programming system data insertion in line 16 is enabled

2002 Oct 15

15

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