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参数资料
| 型号： | YMF740C |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | DS-1L |
| 中文描述： | 的DS - 1公升 |
| 文件页数： | 10/44页 |
| 文件大小： | 224K |
| 代理商： | YMF740C |
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YMF740C
January 14, 1999
-18-
b[12:11] ......SMOD: SB DMA mode
These bits determine the protocol to achieve the DMAC(8237) function on the PCI bus.
“0”:
PC/PCI
(default)
“1” - “3”:
reserved
b[14:13] ......SBVER: SB Version Select
These bits set the version of the SB Pro DSP.
The value set in these bits is returned by sending the E1h
DSP command.
“0”:
ver 3.01
(default)
“1”:
ver 2.01
“2”:
ver 1.05
“3”:
reserved
b15..............IMOD: Legacy IRQ mode
DS-1L supports 2 types of interrupt protocols: PCI interrupt (INTA#) and Legacy interrupt (IRQs).
The
interrupt protocol is selected by IMOD as follows.
The interrupt channels for IRQs are determined by
SBIRQ and MPUIRQ. Only one protocol can be used at once.
“0”:
Legacy interrupt (IRQs)
(default)
“1”:
PCI interrupt (INTA#)
44-45h: Subsystem Vendor ID Write Register
Read / Write
Default: 1073h
Access Bus Width: 16-bit
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
Subsystem Vendor ID Write
b[15:0] ........Subsystem Vendor ID Write Register
This register sets the Subsystem Vendor ID that is read from 2C-2Dh (Subsystem Vendor ID register).
The default value is the YAMAHA Vendor ID, 1073h.
IHVs must change this ID to their Vendor ID in
the BIOS POST routine.
46-47h: Subsystem ID Write Register
Read / Write
Default: 000Ch
Access Bus Width: 16-bit
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
Subsystem ID Write
b[15:0] ........Subsystem ID Write Register
This register sets the Subsystem ID that is read from 2E-2Fh (Subsystem ID register).
The default value is the DS-1L Device ID, 000Ch.
IHVs must change this ID to their ID in the BIOS
POST routine.
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| YMF752 | AC97 Rev2.1 Audio CODEC with SRC |
| YMF752-S | AC97 Rev2.1 Audio CODEC with SRC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| YMF744B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DS-1S |
| YMF744BR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Industrial Control IC |
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