ak4145 AKM Semiconductor, Inc., ak4145 Datasheet - Page 3

• Manufacturer Part Number: ak4145
• Description: Digital Stereo Btsc Encoder
• Manufacturer: AKM Semiconductor, Inc.

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