参数资料
型号: YMF724
厂商: Yamaha Corporation
英文描述: high performance audio controller for the PCI Bus
中文描述: 高性能音频控制器的PCI总线
文件页数: 47/50页
文件大小: 268K
代理商: YMF724
YMF724F
January 14, 1999
-6-
6. Miscellaneous (15-pin)
name
I/O
type
Size
function
ROMCS
O
T
3mA
Chip select for external EEPROM
ROMSK / VOLUP#
IO
Tup
3mA
Serial clock for external EEPROM
or Hardware Volume (Up)
ROMDO / VOLDW#
IO
Tup
3mA
Serial data output for external EEPROM
or Hardware Volume (Down)
ROMDI / TEST2#
I
Tup
-
Serial data input for external EEPROM or Test pin
(Do not connect externally when EEPROM is not.)
XI24
I
C
-
24.576 MHz Crystal
XO24
O
C
2mA
24.576 MHz Crystal
TEST[7:4,1:0]#
I
Tup
-
Test pins (Do not connect externally)
TEST3#
IO
Tup
3mA
Test pin (Connect to ground)
LOOPF[1:0]
-
Capacitor of PLL
Note) Hardware volume and EEPROM interface can not be used at the same time. When both hardware
volume and EEPROM are not used, do not connect these pins externally.
7. Power Supply (39-pin)
name
I/O
type
Size
function
PVDD[5:0]
-
Power supply for PCI Bus Interface (+5.0)
PVSS[14:0]
-
Ground for PCI Bus Interface
LVDD
-
Power supply for PLL Filter (+3.3)
LVSS
-
Ground for PLL Filter
VDD3[3:0]
-
Power supply (+3.3V)
VDD5[3:0]
-
Power supply (+5.0V)
VSS[7:0]
-
Ground
TYPE
T : TTL
A : Analog
Ptr : Tri-State PCI
Ttr : Tri-State TTL
C : CMOS
Pstr : Sustained Tri-Sate PCI
Tup : Pull up (Max. 300kohm) TTL
P : PCI
Pod : Open Drain PCI
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