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參數(shù)資料
| 型號： | PI7C7300ANAE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 50/109頁 |
| 文件大小： | 0K |
| 描述： | IC PCI-PCI BRIDGE 3PORT 272-BGA |
| 產(chǎn)品變化通告： | Product Discontinuation 09/Dec/2010 |
| 標(biāo)準(zhǔn)包裝： | 40 |
| 系列： | * |
| 應(yīng)用： | * |
| 接口： | * |
| 電源電壓： | * |
| 封裝/外殼： | 272-BBGA |
| 供應(yīng)商設(shè)備封裝： | 272-PBGA（27x27） |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
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PI7C7300A
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 45 OF 109
09/25/03 Revision 1.09
interface that fall into this address range. PI7C7300A does not respond to any
transactions that fall outside this address range on the primary interface and forwards
those transactions upstream from the secondary interface (provided that they do not fall
into the memory-mapped I/O range or are not forwarded by the VGA mechanism).
The prefetchable memory range supports 64-bit addressing and provides additional
registers to define the upper 32 bits of the memory address range, the prefetchable
memory base address upper 32 bits register, and the prefetchable memory limit address
upper 32 bits register. For address comparison, a single address cycle (32-bit address)
prefetchable memory transaction is treated like a 64-bit address transaction where the
upper 32 bits of the address are equal to 0. This upper 32-bit value of 0 is compared to
the prefetchable memory base address upper 32 bits register and the prefetchable
memory limit address upper 32 bits register. The prefetchable memory base address
upper 32 bits register must be 0 to pass any single address cycle transactions
downstream.
Prefetchable memory address range has a granularity and alignment of 1MB. Maximum
memory address range is 4GB when 32-bit addressing is being used. Prefetchable
memory address range is defined by a 16-bit prefetchable memory base address register
at configuration offset 24h and by a 16-bit prefetchable memory limit address register at
offset 26h. The top 12 bits of each of these registers correspond to bits [31:20] of the
memory address. The lowest 4 bits are hardwired to 1h. The lowest 20 bits of the
prefetchable memory base address are assumed to be 0 0000h, which results in a natural
alignment to a 1MB boundary. The lowest 20 bits of the prefetchable memory limit
address are assumed to be FFFFFh, which results in an alignment to the top of a 1MB
block.
Note: The initial state of the prefetchable memory base address register is 0000 0000h.
The initial state of the prefetchable memory limit address register is 000F FFFFh. Note
that the initial states of these registers define a prefetchable memory range at the bottom
1MB block of memory. Write these registers with their appropriate values before setting
either the memory enable bit or the master enable bit in the command register in
configuration space.
To turn off the prefetchable memory address range, write the prefetchable memory base
address register with a value greater than that of the prefetchable memory limit address
register. The entire base value must be greater than the entire limit value, meaning that
the upper 32 bits must be considered. Therefore, to disable the address range, the upper
32 bits registers can both be set to the same value, while the lower base register is set
greater than the lower limit register. Otherwise, the upper 32-bit base must be greater
than the upper 32-bit limit.
5.4
VGA SUPPORT
PI7C7300A provides two modes for VGA support:
!
VGA mode, supporting VGA-compatible addressing
!
VGA snoop mode, supporting VGA palette forwarding
5.4.1
VGA MODE
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PDF描述 |
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| PI7C8150ANDE | IC PCI-PCI BRIDGE 2PORT 256-PBGA |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI7C7300ANA-E | 制造商:Pericom Semiconductor Corporation 功能描述:PCI-to-PCI Bridge 272-Pin BGA 制造商:Pericom Semiconductor Corporation 功能描述:PCI to PCI Bridge 272-Pin BGA |
| PI7C7300DNAE | 功能描述:外圍驅(qū)動器與原件 - PCI PCI -to -PCI Bridge 3 Port RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| PI7C7300EVB | 功能描述:界面開發(fā)工具 3 Port PCI Bridge Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| PI7C8140A | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2 PORT PCI TO PCI BRIDGE PLX PCI 6140 COMPARISON |
| PI7C8140AEVB | 功能描述:界面開發(fā)工具 2 Port PCI to PCI Bridge Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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