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参数资料
| 型号： | YMF724F |
| 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： | 29/50页 |
| 文件大小： | 268K |
| 代理商： | YMF724F |
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YMF724F
January 14, 1999
-35-
2-2-3. SB Suspend / Resume
The SB block can read the internal state as to support Suspend and Resume functions.
The internal state
is made up of 218 flip flops.
To read the state, these states are shifted in order and read 8 bits at a time
from the SCAN DATA register.
These registers are mapped to the SB Mixer space (see SB Mixer Register map).
The registers have the
following functions.
F0h: Scan In/ Out Control
Read / Write
Default: 00h
b7
b6
b5
b4
b3
b2
b1
b0
SBPDA
-
SS
SM
SE
SBPDR
b0................SBPDR: Sound Blaster Power Down Request
This bit stops the internal state of the Sound Blaster block.
“0”: Normal
(default)
“1”: Stop
b1................SE: Scan Enable
This bit Shifts the internal state by 1 bit.
Setting a “1” followed by a “0” shifts the internal state.
b2................SM: Scan Mode
This bit sets whether to read or write the state.
“0”: Write
(default)
“1”: Read
b3................SS: Scan Select
This bit gives permission to read or write the internal data to the SCAN DATA register.
“0”: Normal operation (Do not allow read or write).
(default)
“1”: Allow read and write.
b7................SBPDA: Sound Blaster Power Down Acknowledgement
This bit indicates that the SB Block is ready to read or write to the internal state after setting SBPDR.
This bit is read only.
“0”: Read/Write not possible
“1”: Read/ Write possible
相关PDF资料 |
PDF描述 |
|---|---|
| YMF724F-V | high performance audio controller for the PCI Bus |
| YMF740C | DS-1L |
| YMF743-S | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| YMF743 | AC97 Revsion2.1 Audio CODEC with Digital Audio I/F(AC97 2.1版音频编解码器（带数字音频接口）) |
| YMF744B | DS-1S |
相关代理商/技术参数 |
参数描述 |
|---|---|
| YMF724F-V | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:high performance audio controller for the PCI Bus |
| YMF740C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DS-1L |
| YMF740CV | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Industrial Control IC |
| YMF743 | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:AC’97 Revsion2.1 Audio CODEC with Digital Audio I/F |
| YMF743-S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Consumer IC |
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