Pin Description - Yamaha YMF795 Manual

■Pin Description

No. Pin
1 CLK_I
2 <NC>
3 SDIN
4 SYNC
5 SCLK
6 <NC>
7 AVSS
8 VREF
9 HPOUT
10 EQ1
11 EQ2
12 EQ3
13
AVDD
14
15
SPVSS
16
17 SPOUT1
18 SPOUT2
19 DVSS
20 DVDD
21 /IRQ
22 /TESTI
23 /RST
24 TESTO
Note : Ish = Schmitt input pin AI = Analog input pin A0 = Analog output pin
I/O
Ish Clock input pin
Be sure to use in no-connection.
-
The pin is nowhere connected in the chip.
I Serial I/F data input
I Serial I/F synchronous signal input
Ish Serial I/F bit clock input
Be sure to use in no-connection.
-
The pin is nowhere connected in the chip.
- Analog ground
Analog reference voltage pin
A
Connect a 0.1 µF capacitor between this pin and analog ground pin.
AO Analog output pin for earphone
AO Equalizer pin 1
AI Equalizer pin 2
AO Equalizer pin 3
Analog power supply (+3.3V)
-
Connect 0.1 µF and 4.7 µF capacitors between this pin and analog ground pin
- Analog ground exclusively used for speaker
AO Speaker output pin 1
AO Speaker output pin 2
- Digital ground
Digital power supply (+3.3 V)
-
Connect 0.1 µF and 4.7 µF capacitors between this pin and digital ground pin.
O Interrupt signal output
I LSI test input pin (Be sure to connect to DVDD.)
I Hardware reset pin
O LSI TEST output pin (Be sure to use in no-connection)
-6-
YMF795
Function