AK8851 Datasheet, PDF (5/80 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

ASAHI KASEI
56
DVSS
57
DVDD
58
HALFCKO
59
CLK27MO
60
DVDD
61
DVSS
62
DVSS
63
DVDD
64
NC
65
NC
66
DVSS
67
DVSS
68
DVDD
69
CLK
70
DVDD
71
DVSS
72
SDA
73
SELA
74
SCL
75
NC
76
DVSS
77
CLKINV
78
/RESET
79
/PD
80
EXTCLP
81
AVSS
82
AVDD
83
AVSS
84
AVSS
85
AVSS
86
AVSS
87
AVSS
88
VREFOUT
89
AVDD
90
IREFR1
91
IREFR2
92
AVSS
93
AVSS
94
AVDD
95
CLPCAP1
96
AIN1
97
AVSS
98
AIN2
99
AVSS
100 AIN3
G Ground pin for Digital
P Digital supply voltage (3.3V)
O
Indicator for Y Data and Cb/Cr Data in 8-bit output mode
(Indicator transition rate is 13.5MHz)
O 27MHz Clock output
P Digital supply voltage (3.3V)
G Ground pin for Digital
G Ground pin for Digital
P Digital supply voltage (3.3V)
[AK8851]
G Ground pin for Digital
G Ground pin for Digital
P Digital supply voltage (3.3V)
I Clock input pin (24.576MHz)
P Digital supply voltage (3.3V)
G Ground pin for Digital
I/O I²C bus Data
I I²C bus address select
I I²C bus clock
G Ground pin for Digital
I CLK27MO output polarization is determined by this pin
I
Reset signal input pin (Low Active)
Reset sequence needs 24.576MHz Clock
Power down control pin.
L: Power down
I H: Active
Reset sequence is necessary when Power Down signal after High
All output pins become Low while Power down pin is Low.
Monitor pin for internal clamp timing pulse.
I/O External clamp timing pulse can be input on this pin by setting a register
Open this pin when not using
G Ground pin for Analog
P Analog supply voltage (3.3V)
G Ground pin for Analog
G Ground pin for Analog
G Ground pin for Analog
G Ground pin for Analog
G Ground pin for Analog
O
Internal Vref Output pin
Connect ceramic capacitor (0.1uF -) between Analog Ground
G Analog supply voltage (3.3V)
O Connect 12kΩ(1%) Register between Analog ground
O Connect 4.7kΩ(1%) Register between Analog ground
G Ground pin for Analog
G Ground pin for Analog
P Analog supply voltage (3.3V)
O
Capacitor for clamp.
Connect 0.1uF ceramic capacitor between AVSS
I
Analog Video Signal Input pin.
Input –6dB analog video signal via 0.1uF capacitor.
G Ground pin for Analog
I
Analog Video Signal Input pin.
Input –6dB analog video signal via 0.1uF capacitor.
G Ground pin for Analog
I
Analog Video Signal Input pin.
Input –6dB analog video signal via 0.1uF capacitor
AVDD
P Analog supply voltage (3.3V)
AVSS
G Ground pin for Analog
DVDD
P Digital supply voltage (3.3V)
DVSS
G Ground pin for Digital
* Recommendation: Perform a “power on reset” prior to using the device, as applying voltage to the AK8851 cannot ensure
proper device initialization. Only a reset sequence can ensure this.
MS0244-E-03
5
Confidential
2005 / 07