YMF754
3. External Audio Interface (5-pin)
Name
SPDIFOUT
SPDIFIN
ZVBCLK
ZVLRCK
ZVSDI
I/O
O
I
I
I
I
Type
T
Tup
Tup
Tup
Tup
Size
2mA
-
-
-
-
Function
Digital Audio Interface output
Digital Audio Interface input
Zoomed Video Port
Zoomed Video Port
Zoomed Video Port
Bit Clock
L/R Clock
Serial Data
4. Legacy Device Interface (15-pin)
Name
I/O
Type
Size
Function
Interrupt 5 of Legacy Audio
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
GP[3:0]
GP[7:4]
RXD
TXD
O
O
O
O
O
I
I
I
O
Ttr
Ttr
Ttr
Ttr
Ttr
A
Tup
Tup
T
6mA
6mA
6mA
6mA
6mA
-
-
-
2mA
It is directly connected to the interrupt signal of
System I/O chip.
Interrupt 7 of Legacy Audio
Interrupt 9 of Legacy Audio
Interrupt 10 of Legacy Audio
Interrupt 11 of Legacy Audio.
Joystick Port
Joystick Port
MIDI Data Receive
MIDI Data Transfer
5. Miscellaneous (11-pin)
Name
ROMCS
ROMSK / VOLUP#
ROMDO / VOLDW#
ROMDI
XI24
XO24
LOOPF
GPIO[2:0]
TEST#
I/O
O
IO
IO
I
I
O
I
IO
I
Type
T
Tup
Tup
Tup
C
C
A
Tup
Tup
Size
2mA
2mA
2mA
-
-
-
-
6mA
-
Function
Chip select for external EEPROM
Serial clock for external EEPROM
or Hardware Volume (Up)
Serial data output for external EEPROM
or Hardware Volume (Down)
Serial data input for external EEPROM
24.576 MHz Crystal
24.576 MHz Crystal
Capacitor for PLL
General purpose Input / Output
GPIO2 can use for a reset pin of Secondary AC’97.
LSI Test pin (Do not connect externally.)
June 28, 1999
-6-
YAMAHA [ YAMAHA CORPORATION ]
