Pin Descriptions - Acer 390 Series Service Manual

2.6.3

Pin Descriptions

Table 2-11 YMF715 Descriptions
Pin name
ISA bus interface: 36 pins
D7-0
Al 1-0
AEN
/IOW
/IOR
RESET
IRQ3,5,7,9,10,11
DRQ0,1,3
/DACK0, 1,3
Analog Input & Output : 24 sins
OUTL
OUTR
VREFI
VREFO
AUXIL
AUX1R
AIJX2L
AUX2R
LINEL
LINER
MIC
MIN
TRECL
TRECR
SBFLTL
SBFLTR
SYNSHL
SYNSHR
ADFLTL
ADFLTR
VOCOL
VOCOR
VOCIL
VOCIR
Multi-purpose Dins: 13 pins
SEL2-0
Major Chips Description
Pins I/O
8 I/O
12 I
1 I
1 I
1 I
1 I
6 T
3 T
3 I
1 O
1 O
1 I
1 O
l I
l I
l I
1 I
1 I
1 I
1 I
1 I
1 -
1 -
1 -
1 -
1 -
1 -
1 -
1 -
1 O
I O
1 I
1 I
3 I+
Type Size
TTL 24mA
TTL 2mA
TTL 2mA
Schmitt 4mA
Schmitt 4mA
Schmitt 4mA
TTL 12mA
TTL 12mA
TTL 2mA
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
CMOS 2mA
Function
Data Bus
Address Bus
Address Bus Enable
Write Enable
Read Enable
Reset
Interrupt request
DMA Request
DMA Acknowledge
Left mixed analog output
Right mixed analog output
Voltage reference input
Voltage reference output
Left AUX1 input
Right AUX1 input
Left AUX2 input
Right AUX2 input
Left LINE input
Right LINE input
MIC input
Monaural input
Left Treble capacitor
Right Treble-capacitor
Left SBDAC filter
Right SBDAC filter
Left SYNDAC sample / hold capacitor
Right SYNDAC sample / hold capacitor
Left input filter
Right input filter
Left voice output
Right voice output
Left voice input
Right voice input
Refer to "Multi-purpose pins" section
2-83