AK8854VQ Datasheet, PDF (10/95 Pages) Asahi Kasei Microsystems – Multi-Format Digital Video Decoder

[AK8854VQ]
Pin
No.
Symbol P/S¹ I/O²
Description
40 OE
Output enable pin.
P2
I
L: Digital output pin in Hi-z output mode.
H: Data output mode.
Hi-z input to OE pin is prohibited.
41 RSTN
Reset signal input pin.
P2
I
Hi-z input is prohibited.
L: Reset.
H: Normal operation.
42 PDN
Power-down control pin.
P2
I
Hi-z input is prohibited.
L: Power-down.
H: Normal operation.
43 DVDD
D P Digital power supply pin.
44 XTO
Crystal connection pin.
Connect to digital ground via 22 pF capacitor as shown in Sec. 11.
D O Use 24.576 MHz crystal.
When PDN=L, output level is DVSS.
If crystal is not used, connect to NC or DVSS.
45 DVSS
D G Digital ground pin.
46 XTI
Crystal connection pin.
D
I
Connect to digital ground via 22 pF capacitor as shown in Sec. 11.
Use 24.576 MHz crystal resonator.
For input from 24.576 MHz crystal oscillator, use this pin.
47 CLKMD
Clock mode selection pin. Connect to DVDD or DVSS.
D
I
DVSS connection: For crystal.
DVDD connection: For quartz generator or other external
clock input; not for crystal.
48 AVSS
A G Analog ground pin.
49 AVDD
A P Analog power supply pin.
50 IREF
A
O
Reference current setting pin.
Connect to ground via 6.8 kΩ (≤1% accuracy) resistor.
51 AVSS
A G Analog ground pin.
52 ATIO
A I/O Analog test pin. For normal operation, connect to AVSS.
53 AVSS
A G Analog ground pin.
54 AIN1
Analog video signal input pin. Connect via 0.033 µF capacitor and
A I voltage-splitting resistors as shown in Sec. 11. If it is not used, connect
to NC.
55 AVDD
A P Analog power supply pin.
56 AIN2
Analog video signal input pin. Connect via 0.033 µF capacitor and
A I voltage-splitting resistors as shown in Sec. 11. If it is not used, connect
to NC.
57 VCOM
A
O
Common internal voltage for AD convertor.
Connect to AVSS via ≥0.1 µF ceramic capacitor.
58 AIN3
Analog video signal input pin. Connect via 0.033 µF capacitor and
A I voltage-splitting resistors as shown in Sec. 11. If it is not used, connect
to NC.
59 VRN
A
O
Internal reference negative voltage pin for AD converter.
Connect to AVSS via ≥0.1 µF ceramic capacitor.
1_{Power supply: A, AVDD; D, DVDD; P1, PVDD1; P2, PVDD2.}
2_{Input/Output: O, output pin; I, intput pin; I/O, input/output pin; P, power supply pin;}
G, ground connection pin.
MS0973-E-01
10
2008/07