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| 型號： | 24888 |
| 英文描述： | Preliminary AMD-8151 HyperTransport AGP3.0 Graphics Tunnel Data Sheet |
| 中文描述： | 初步的AMD - 8151 HyperTransport的AGP3.0圖形隧道數(shù)據(jù)表 |
| 文件頁數(shù)： | 15/45頁 |
| 文件大?。?/td> | 755K |
| 代理商： | 24888 |
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24888 Rev 3.02 - June 17, 2003
AMD-8151
TM
AGP Tunnel Data Sheet
15
The following are configuration spaces:
Device
Function
"A"
0
"B"
0
Table 3: Configuration spaces.
The IC does not claim configuration-register accesses to unimplemented functions within its devices (they are
forwarded to the other side of the tunnel). Accesses to unimplemented register locations within implemented
functions are claimed; such writes are ignored and reads always respond with all zeros.
The following are memory mapped spaces:
Base address
register
DevA:0x10
Variable
DevA:0xB8
Table 4: Memory mapped address spaces.
The following are register attributes found in the register descriptions.
Type
Description
Read or read-only
Capable of being read by software. Read-only implies that the register cannot be written to by
software.
Write
Capable of being written by software.
Set by hardware
Register bit is set high by hardware.
Write once
After RESET#, these registers may be written to once. After being written, they become read only
until the next RESET# assertion. The write-once control is byte based. So, for example, software
may write each byte of a write-once DWORD as four individual transactions. As each byte is
written, that byte becomes read only.
Write 1 to clear
Software must write a 1 to the bit in order to clear it. Writing a 0 to these bits has no effect.
Write 1 only
Software can set the bit high by writing a 1 to it. However subsequent writes of 0 will have no
effect. RESET# must be asserted in order to clear the bit.
Table 5: Register attributes.
5.2
AGP Device Configuration Registers
These registers are located in PCI configuration space, in the first device (device A), function 0. See section
5.1.2 for a description of the register naming convention.
AGP Vendor And Device ID Register
DevA:0x00
Default: 7454 1022h
Bits
Description
31:16 AGP device ID.
15:0
Vendor ID.
Attribute: Read only.
Mnemonic Registers
DevA:0xXX AGP device header; link and AGP capabilities blocks
DevB:0xXX PCI-PCI bridge registers for AGP
Size
(bytes)
Mnemonic Registers
None
None
Graphic virtual memory aperture; minimum of 32 megabytes.
GART block in physical memory.
4K
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 248-8886-007 | 制造商:ITT Interconnect Solutions 功能描述:248-8886-007 / 248-8886-007 / D Sub |
| 248-8887-007 | 制造商:ITT Interconnect Solutions 功能描述:248-8887-007 / 248-8887-007 / D Sub |
| 248-8888-007 | 制造商:ITT Interconnect Solutions 功能描述:248-8888-007 / 248-8888-007 / D Sub |
| 248-8889-007 | 制造商:ITT Interconnect Solutions 功能描述:248-8889-007 / 248-8889-007 / D Sub |
| 248-8890-007 | 制造商:ITT Interconnect Solutions 功能描述:248-8890-007 / 248-8890-007 / D SUB |
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