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Major Chips Description 2-89
2.8.3 Pin Descriptions
Table 2-15 YMF715 Descriptions
Pin name Pins I/O Type Size Function
ISA bus interface: 36 pins
D7-0 8 I/O TTL 24mA Data Bus
Al 1-0 12 I TTL 2mA Address Bus
AEN 1 I TTL 2mA Address Bus Enable
/IOW
1
I Schmitt 4mA Write Enable
/IOR 1 I Schmitt 4mA Read Enable
RESET 1 I Schmitt 4mA Reset
IRQ3,5,7,9,10,11 6 T TTL 12mA Interrupt request
DRQ0,1,3 3 T TTL 12mA DMA Request
/DACK0, 1,3 3 I TTL 2mA DMA Acknowledge
Analog Input & Output : 24 sins
OUTL 1 O - - Left mixed analog output
OUTR 1 O - - Right mixed analog output
VREFI 1 I - - Voltage reference input
VREFO 1 O - - Voltage reference output
AUXIL l I - - Left AUX1 input
AUX1R l I - - Right AUX1 input
AIJX2L l I - - Left AUX2 input
AUX2R 1 I - - Right AUX2 input
LINEL 1 I - - Left LINE input
LINER 1 I - - Right LINE input
MIC 1 I - - MIC input
MIN 1 I - - Monaural input
TRECL 1 - - - Left Treble capacitor
TRECR 1 - - - Right Treble-capacitor
SBFLTL 1 - - - Left SBDAC filter
SBFLTR 1 - - - Right SBDAC filter
SYNSHL 1 - - - Left SYNDAC sample / hold capacitor
SYNSHR 1 - - - Right SYNDAC sample / hold capacitor
ADFLTL 1 - - - Left input filter
ADFLTR 1 - - - Right input filter
VOCOL 1 O - - Left voice output
VOCOR I O - - Right voice output
VOCIL 1 I - - Left voice input
VOCIR 1 I - - Right voice input