CS4952 查看數據表（PDF） - Cirrus Logic

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CS4952

NTSC/PAL Digital Video Encoder

Cirrus Logic 

CS4952/53

register (0x08). In this mode turn-on through the

control register will not be instantaneous.

CVBS75 DAC

The CVBS75 pin is driven from a 9-bit 27 MHz

current output DAC that internally receives a com-

bined luma and chroma signal to provide compos-

ite video output. CVBS75 is designed to drive

proper composite video levels into a 75 Ω load.

Reference the detailed electrical section of this data

sheet for the exact CVBS75 digital to analog AC

and DC performance data. A C_75_EN enable con-

trol register bit in the DAC register (0x08) is provid-

ed to enable or disable the ouput pin. When

disabled, no current flows from the output. For a

complete disable and lower power operation the

CVBS75 DAC can be totally shut down via the

C_75_PD control register bit in the DAC register

(0x08). In this mode turn-on through the control

register will not be instantaneous.

CVBS37 DAC

The CVBS37 pin is driven from a 9-bit 27 MHz

current output DAC that internally receives a com-

bined luma and chroma signal to provide compos-

ite video output. CVBS37 is designed to drive

proper composite video levels into a 37.5 Ω load.

Reference the detailed electrical section of this data

sheet for the exact CVBS37 digital to analog AC

and DC performance data. The C_37_EN DAC en-

able control register bit is in the DAC register

(0x08) provided to enable or disable the ouput pin.

When disabled, no current flow from the output.

For a complete disable and lower power operation

the CVBS37 DAC can be totally shut down via the

C_37_PD control register bit in the DAC register

(0x08). In this mode turn-on through the control

register will not be instantaneous.

26

DS223PP2

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