CS4954-CQZR Cirrus Logic Inc, CS4954-CQZR Datasheet - Page 22

• Manufacturer Part Number: CS4954-CQZR
• Description: IC NTSC/PAL Digital Video Encoder
• Manufacturer: Cirrus Logic Inc
• Type: Video Encoderr

Specifications of CS4954-CQZR

• Voltage - Supply, Analog: 3.15 V ~ 5.25 V
• Voltage - Supply, Digital: 3.15 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CDB4955A - EVALUATION BOARD FOR CS4955A
• Applications: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.6
The CS4954/5 automatically synthesizes NTSC
and PAL color subcarrier clocks using the CLK fre-
quency
(SC_SYNTH0/1/2/3). The NTSC subcarrier syn-
thesizer is reset every four fields (every eight fields
for PAL).
22
ITU R.BT656
DATA
Subcarrier Generation
V[7:0]
and
309
309
Active Video
308
308
Y
310
310
Cr
309
309
Burst Phase = 135 degrees relative to U
four
Y FF 00 00 XY 80 10 80 10
311
311
310
310
Figure 10. PAL Video Non-Interlaced Progressive Scan Timing
EAV Code
4 Clocks
312
312
311
311
control
Figure 11. CCIR656 Input Mode Timing
312
312
VSYNC Drops
313
313
Analog
Field 1
Analog
Field 2
Analog
Field 3
Analog
Field 4
1
1
1
1
registers
Composite
Video
2
2
2
2
80
268 Clocks (NTSC)
280 Clocks (PAL)
Horizontal Blanking
Ancilliary Data
10 80 10 80 10
3
3
3
3
The SC_SYNTH0/1/2/3 registers used together
provide a 32-bit value that defaults to NTSC
(43E0F83Eh) following RESET. Table
the 32-bit value required for each of the different
broadcast formats.
4
4
4
4
Burst Phase = 225 degrees relative to U
5
5
5
5
80 10 80 10 FF 00 00 XY Cb Y Cr Cb Y Cr
6
6
6
6
7
7
7
7
SAV Code
4 Clocks
CS4954 CS4955
23
23
23
23
Active Video
24
24
24
24
1440 Clocks
4
DS278F6
shows