AK8817_09 Datasheet, PDF (8/50 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHI KASEI
[AK8817/18]
Pin#
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Pin Name
PVSS
VDI
HDI
SDA
SCL
N.C.
ATPG
PDN
RSTN
DVSS
DVDD
N.C.
VOUT
BVSS
SAG
AVSS
DACOUT
N.C.
I/O
Functional Outline
G Ground pin for PVDD.
I
Vertical SYNC signal input pin.
Hi-Z input is acceptable to this pin at PDN = L.
I
Horizontal SYNC signal input pin.
Hi-Z input is acceptable to this pin at PDN = L.
I2C data pin.
I/O
This pin is pulled-up to PVDD.
Hi-Z input is possible when PDN is at low.
SDA input is not accepted during the reset sequence operation.
I2C clock input pin
I
An input level of lower-than-PVDD should be input.
Hi-Z input is possible when PDN is at low.
SCL input is not accepted during the reset sequence operation.
- For normal operation, left open.
I For normal operation, connect to ground.
Power Down Pin. After returning from PD mode to normal operation, RESET
I
Sequence should be done to AK8817/18VQ.
“L “(GND level): Power-down
“H “: normal operation
Reset input pin. In order to initialize the device , an initialization must be made in
accordance with the reset sequence.
I “L “ : reset
“H “ : normal operation
Hi-Z input is acceptable to this pin at PDN = L.
G Digital ground pin (digital core ground).
P Digital power supply pin (digital core power supply).
- For normal operation, left open.
O Video output pin.
G
Substrate ground pin.
Connect this pin to Analog ground
O SAG Compensation Input pin
G Analog ground pin.
O
DAC output pin. Connect this pin to Analog ground via a 390 ohm resistor
( better than +/- 1% accuracy ).
- For normal operation, left open.
Analog Output pin status
MODE / PIN name
PDN＝L
PDN=H、DAC=L
VIDEOAMP=L
PDN=H、DAC=H
VIDEOAMP=L
PDN=H、DAC=H
VIDEOAMP=H
IREF
Hi-Z
Output
Output
Output
VREF
Hi-Z
Outpu
Output
Output
DACOUT
Hi-Z
Hi-Z
DAC Power Down
Output
Output
VOUT
Hi-Z
Hi-Z
VIDEOAMP Power Down
VIDEOAMP Power Down(1)
Output
DAC: Sub Address 0x00 bit7 0: L->DACOFF 1: H->DACON
VIDEOAMP: Sub Address 0x01 bit3,4 00: L->VIDEOAMP_OFF 01,10: H-> VIDEOAMP_ON
Note1) Video Amp becomes power down. Since DACOUT pin and VOUT pin are connected with RESISTOR in the LSI,
DACOUT pin are not Hi-Z. In case of using only DAC, VOUT pin and SAG pin should be open states.
Rev.001E
8
2009 / 12