ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 23

• Manufacturer Part Number: ak8825
• Description: Hd/sd Multi Format Video Encoder With 3ch Dac
• Manufacturer: AKM Semiconductor, Inc.

After initializing with PDN-pin = Low, AK8825 is Composite Video Encoder mode.
Set to Component Video Encoder mode by register setting. (Set CONVMOD[1:0]-bit =[10])
(r) shows Register-bit
Rev-E-00
(5-4) Setting to High Speed Video DAC mode after power-up
CONVMOD[1:0] (r)
Register set (r)
DTRSTN (r)
DACnEN (r)
PLLPDN (r)
Supply
Power
CLKIN
DATA
Fig. 15 Power-Up sequence (To set High Speed Video DAC mode after power-up)
PDN
(1) PDN-pin should be Low states more than 100ns after power-up.
(2) Set to High Speed DAC mode after 100clock count with Clock Input to CLKIN-pin.
(3) Set to DTRSTN-bit should be High after setting High Speed Video DAC mode
0x00
t >100ns
t >100clk
(1)
(2)
(3)
23
54MHz (max)
Low
0x10
DVDD:1.65V
PVDD:1.65V
AVDD:2.7V
2008/03
[AK8825]