[AK4145]
PIN/FUNCTION
Function
-
Filter Pin, 4.7nF should be connected between FILT pin and VSS pin.
I
Parallel/Serial Select Pin (Internal pull-up pin)
“L”: Serial control mode, “H”: Parallel control mode
3
CV27M
I
Composite Video or 27MHz Signal Input Pin.
4
PDN
I
Power-Down Mode Pin
When at “L”, the AK4145 is in the power-down mode and is held in reset.
The AK4145 must be reset once upon power-up.
5
MCLK
I
Master Clock Input Pin
6
LRCK
I
Channel Clock Input Pin
7
BICK
I
Audio Serial Data Clock Input Pin
8
SDTI
I
Audio Serial Data Input Pin
9
FS
I
Sampling Rate Control Pin in parallel control mode
SDA
I/O
Control Data Pin in serial control mode
10 DIF
I
Audio Data Interface Format Pin in parallel control mode
SCL
I
Control Data Clock Pin in serial control mode
11 TVDD
-
Digital I/O Power Supply Pin, DVDD(min:1.7V)
∼
3.6V
12 DVDD
-
Digital Power Supply Pin, 1.7
∼
1.9V
13 VSS
-
Ground Pin
14 VCOM
O
Common Voltage Pin, AVDD/2
Normally connected to VSS with a 0.1μF ceramic capacitor in parallel with a 10μF
electrolytic cap.
15 AVDD
-
Analog Power Supply Pin, 2.7
∼
3.6V
16 CA
O
Baseband Composite Audio Output Pin
Note: All input pins except pull-up pin should not be left floating.
No.
1
2
Pin Name
FILT
PSN
I/O
■
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Analog
Digital
Pin Name
CV
FS(Parallel mode), DIF(Parallel mode)
Setting
Connect to VSS.
Connect to VDD or VSS.
■
Output Status at PDN pin = “L”
Below is the output status of each output pin when the PDN pin = “L”.
Pin#
1
9
14
16
Pin Name
FILT
SDA
VCOM
CA
Status
VSS
Hi-Z
VSS
VCOM(=VSS)
Rev. 0.3-PB
-3-
2007/12
AKM [ ASAHI KASEI MICROSYSTEMS ]
