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参数资料
| 型号： | YMF754-V |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP128 |
| 封装： | 0.50 MM PITCH, LQFP-128 |
| 文件页数： | 10/60页 |
| 文件大小： | 309K |
| 代理商： | YMF754-V |
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YMF754
December 25, 1999
-18-
40-41h: Legacy Audio Control
Read / Write
Default: 907Fh
Access Bus Width: 8, 16, 32-bit
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
LAD
SIEN
MPUIRQ
SBIRQ
SDMA
I/O
MIEN
MEN
JPEN FMEN SBEN
b0................SBEN: Sound Blaster Enable
This bit enables the mapping of the Sound Blaster Pro block in the I/O space specified by 62-63h: Sound
Blaster Base Address register, when LAD is set to “0”.
“0”: Disable the mapping of the SB block to the I/O space
“1”: Enable the mapping of the SB block to the I/O space
(default)
b1................FMEN: FM Synthesizer Enable
This bit enables the mapping of the FM Synthesizer block in the I/O space specified by 60-61h: FM
Synthesizer Base Address register when LAD is set to “0”.
FM Synthesizer registers can be accessed via
SB I/O space, while the SB block is enabled, even if FMEN is set to “0”.
“0”: Disable the mapping of the FM Synthesizer block to the FMIO space
“1”: Enable the mapping of the FM Synthesizer block to the FMIO space
(default)
After setting FMEN to “1”, about 100 msec is necessary before accessing these I/O space.
b2................JPEN: Joystick Port Enable
This bit enables the mapping of the Joystick block in the I/O space specified by 66-67h: Joystick Base
Address register, when LAD is set to “0”.
“0”: Disable the mapping of the Joystick block
“1”: Enable the mapping of the Joystick block
(default)
b3................MEN: MPU401 Enable
This bit enables the mapping of the MPU401 block in the I/O space specified by 64-65h: MPU401 Base
Address register, when LAD is set to “0”.
“0”: Disable the mapping of the MPU401 block
“1”: Enable the mapping of the MPU401 block
(default)
b4................MIEN: MPU401 IRQ Enable
This bit enables the interrupt service of MPU401, when LAD is set to “0” and MEN is set to “1”.
MPU401 generates an interrupt signal when it receives any kind of MIDI data from the RXD pin.
“0”: The MPU401 block can not use the interrupt service.
“1”: The MPU401 block can use interrupt signals determined by the MPUIRQ bits.
(default)
b5................I/O: I/O Address Aliasing Control
This bit selects the number of bits to decode for the I/O address of each block.
“0”: 16-bit address decode
“1”: 10-bit address decode
(default)
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相关代理商/技术参数 |
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| YMF781 | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:APL-1 Automobile sound PLayer-1 |
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| YMH025-02R | 制造商:YEONHO 制造商全称:YEONHO ELECTRONICS 功能描述:2.50mm PITCH CONNECTOR |
| YMH025-03R | 制造商:YEONHO 制造商全称:YEONHO ELECTRONICS 功能描述:2.50mm PITCH CONNECTOR |
| YMH025-04R | 制造商:YEONHO 制造商全称:YEONHO ELECTRONICS 功能描述:2.50mm PITCH CONNECTOR |
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