UPD64084 NEC, UPD64084 Datasheet - Page 29

• Manufacturer Part Number: UPD64084
• Description: THREE-DIMENSIONAL Y/C SEPARATION LSI WITH ON-CHIP MEMORY
• Manufacturer: NEC

12.3 Pin Treatment
Supply 2.5 V to the AVDD pins and supply 3.3 V to the DVDDIO pin. Isolate them sufficiently from the digital
section power supply.
Use as wide wiring patterns as possible as the ground lines of each bypass capacitor and the AGND pins so as
to minimize their impedance.
Pull down the CBPY and CBPC pins via a 0.1 F bypass capacitor.
When DAC aren't used, connect AGND pin to digital ground, AVDD pin to digital power supply, and AYO, ACO,
CBPY and CBPC pins set open.
When the digital I/O pin DYCO9 to DYCO0 aren't used, these pins set open.
Figure 12-2. Video Signal Output Waveform Example (for 75 % Color Bar Input)
131 IRE: 1023
87 IRE: 1023
0 IRE: 256
0 IRE: 512
43 IRE: 0
87 IRE: 0
896
768
640
512
384
128
896
768
640
384
256
128
Center = 512 LSB
COUTS = 0x
COUTS = 1x
Data Sheet S16021EJ2V0DS
Sync-tip: 40 IRE = 20 LSB
Pedestal: 0 IRE = 256 LSB
MAX. 131 IRE = 1023 LSB
100 IRE = 840 LSB
1.94 V
0.94 V
1.94 V
0.94 V
PD64084
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