AK7780 查看數據表（PDF） - Asahi Kasei Microdevices
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AK7780 Datasheet PDF : 28 Pages
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[AK7780]
PIN FUNCTION
No Pin Name I/O
Function
Classification
Filter connection pin for AK7780 core PLL
1
LFLT O When using the PLL function, connect with R (1.5kΩ) and C (47nF) in series Analog Output
and connected to analog ground (AVSS) see. 9. System design (1)
2
AVSS
- Analog ground 0V
Power supply pin for analog section 3.3V (typ)
3 AVDD -
Analog Power
Supply
TEST pin (Internal pull-down)
4 TESTI1 I * Connect to DVSS
I2CBUS select pin
5
I2CSEL I
* I2CSEL= “L”: Normal serial interface
* I2CSEL= “H”: I2CBus selected mode. SCL and SDA are active.
I2CSEL must be set to “L (DVSS)” or ”H (DVDD)”.
6 SRCSET [1] I SRC select pin 1
7 SRCSET [0] I SRC select pin 0
Silicon substrate potential 0V
8
BVSS - Connect to AVSS.
9
DVDD - Power supply pin for digital section 3.3V (typ)
10 DVSS - Ground pin for digital section 0V
Master clock input pin
11
XTI
I Connect a crystal between this pin and the XTO pin, or input an external
CMOS clock signal to the XTI pin.
Crystal oscillator output pin
12
XTO
O When using a crystal, connect it between XTI and XTO.
When using an external clock, keep this pin open.
13 DVSS - Ground pin for digital section 0V
14 DVDD18 - Power supply pin for digital section 1.8V (typ)
TEST
I2C Select
SRC
Analog Power
Supply
Digital Power
Supply
System Clock
Digital Power
Supply
15 CKM [1] I Clock mode select pin 1
16 CKM [0] I Clock mode select pin 0
Mode select
17 CKM [2] I Clock mode select pin 2
18 DVDD18 - Power supply pin for digital section 1.8V (typ)
19 DVSS - Ground pin for digital section 0V
20 DVDD - Power supply pin for digital section 3.3V (typ)
Digital Power
Supply
MS0581-E-00-PB
-6-
2007/09
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