AK8859VN Datasheet, PDF (25/72 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

[AK8859VN]
[7.12.] Output pin status
The AK8859VN output from the DATA[7:0]-pin, VD_F-pin, VAR-pin and HD-pin can each be fixed at Low
via register.
Setting each digital output pins fixed to Low output
Name
Definition
[0]: Normal output
DL
[1]: [D7: D0] pin output fixed at Low.
VD_FL
[0]: Normal output
[1]: VD_F pin output fixed at Low.
VARL
[0]: Normal output
[1]: VAR pin output fixed at Low.
HL
[0]: Normal output
[1]: HD pin output fixed at Low.
Notes
Sub Address: 0x05 [3:0]
Default: Low output
Default: Low output
Default: Low output
Default: Low output
In addition, the output from the DTCLK, DATA[7:0], VD_F, VAR and HD pins can be set to Hi-z output via
register.
Setting digital output pins* to Hi-z output
Sub Address: 0x05 [4]
Name Definition
Notes
OEN
[0]: Normal output
[1]: Hi-Z output
Default: [0] Normal output
*Collective term for DTCLK, DATA[7:0], HD, VD_F and VAR pins.
However, the PDN pin states will have priority regardless of these register setting. When PDN pin is Low
output, the output from the DTCLK, DATA[7:0], VD_F, VAR and HD pins is Low output.
The relation between PDN pin and digital output pin status is show as follows:
PDN
Register setting
-pin _{OEN-bit DL-bit VD_FL-bit VAR-bit}
L
X
X
X
X
H
H
X
X
X
H
L
L
L
L
H
L
H
H
H
*DOUT is normal output.
HL-bit
X
X
L
H
Digital output pins status
DATA[7:0] VD_F VAR HD
Low
Hi-z
DOUT DOUT DOUT DOUT
Low
Low Low Low
DTCLK
DOUT
DOUT
MS1179-E-00
AKM Confidential
- 25 -
2010/04