AKD4556 データシートの表示（PDF） - Asahi Kasei Microdevices
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AKD4556 Datasheet PDF : 22 Pages
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ASAHI KASEI
[AK4556]
PIN/FUNCTION
No. Pin Name
I/O Function
1 RIN
I Rch Analog Input Pin
2 LIN
I Lch Analog Input Pin
3 VSS
- Ground Pin
4 VA
- Analog Power Supply Pin
5 VD
- Digital Power Supply Pin
6 DEM0
I De-emphasis Control Pin
7 DEM1
I De-emphasis Control Pin
8 SDTO
9 CKS0
10 CSK1
11 CSK2
Audio Serial Data Output Pin
O
When PDN pin is “L”, SDTO pin outputs “L”.
I
Mode Setting Pin #0
I Mode Setting Pin #1
I Mode Setting Pin #2
12 CSK3
I Mode Setting Pin #3
13 SDTI
I Audio Serial Data Input Pin
14 LRCK
Input/Output Channel Clock Pin
I/O
When PDN pin is “L”, LRCK pin outputs “L” in master mode.
15 MCLK
I Master Clock Input Pin
16 BCLK
Audio Serial Data Clock Pin
I/O
When PDN pin is “L”, BCLK pin outputs “L” in master mode.
Power-Down & Reset Mode Pin
17 PDN
I
“L”: Power-down and Reset, “H”: Normal operation
The AK4556 should be reset once by bringing PDN pin = “L”.
18 VCOM
O Common Voltage Output Pin, 0.5 x VA
19 LOUT
Lch Analog Output Pin
O
When PDN pin is “L”, LOUT pin becomes Hi-Z.
20 ROUT
Rch Analog Output Pin
O
When PDN pin is “L”, ROUT pin becomes Hi-Z.
Note: Do not allow digital input pins except analog input pins (LIN and RIN) to float.
Handling of Unused Pin
The unused I/O pin should be processed appropriately as below.
Classification
Analog Input
Analog Output
Pin Name
LIN, RIN
LOUT, ROUT
Setting
These pins should be open.
These pins should be open.
MS0559-E-00
-5-
2006/11
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