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參數(shù)資料
| 型號： | OXCB950 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Integrated High Performance UART Cardbus / PCI interface |
| 中文描述： | 綜合高性能的UART Cardbus / PCI接口 |
| 文件頁數(shù)： | 15/68頁 |
| 文件大?。?/td> | 409K |
| 代理商： | OXCB950 |
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Data Sheet Revision 1.1
Page 15
OXCB950
OXFORD SEMICONDUCTOR LTD.
6.3
Accessing the UART function
Access to the internal UART is achieved via standard I/O and memory mapping, at addresses defined by the Base Address
Registers (BARs) in the PCI configuration space. These BARs are configured by the systemto allocate blocks of I/O and
memory space to this logical function, according to the size required by the function. The base addresses that have been
allocated can then be used to access this uart function. The mapping of these BARs is shown in the table below.
BAR
UART Function
0
1
2
3
4
Internal UART (I/O Mapped)
Internal UART(Memory Mapped)
Local configuration registers (I/O Mapped)
Local configuration registers (Memory Mapped)
Cardbus Status Registers (Memory Mapped)
– relevant to cardbus mode only
Unused
5
Table 4: Base Address Register definition
6.3.1
IO and memory space
BAR 0 and BAR 1 of function 0 are used to access the internal UART. The function reserves an 8-byte block of I/O space and a
4K byte block of memory space. Once the I/O and/or the Memory access enable bits in the Command register (of the PCI
configuration space) are set, the UART can be accessed following the mapping shown in Table 5.
UART
Address
for Function0 in IO space (hex)
(hex)
0
1
2
3
4
5
6
7
UART
Address
for Function0 in Memory space (hex)
000
001
002
003
004
005
006
007
Cardbus/PCI access to the internal UART
Cardbus/PCI Offset from Base Address 0
0
1
2
3
4
5
6
7
Cardbus/PCI Offset from Base Address 1
00
04
08
0C
10
14
18
1C
Table 5: Cardbus/PCI address map for the internal UART (I/O and memory)
Note 1:
Since 4K of memory space is reserved and the full bus address is not used for decoding, there are a number of aliases of the UART in the allocated
memory region
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相關代理商/技術參數(shù) |
參數(shù)描述 |
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| OXCB950-TQAG | 功能描述:外圍驅(qū)動器與原件 - PCI 32 bit PC Card bridge to serial prt RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| OXCB950-TQC60-A | 制造商:OXFORD 制造商全稱:OXFORD 功能描述:Integrated High Performance UART Cardbus / 3.3v PCI interface |
| OXCF950 | 制造商:OXFORD 制造商全稱:OXFORD 功能描述:low cost asynchronous 16-bit PC card or Compact Flash UART device |
| OXCF950_06 | 制造商:OXFORD 制造商全稱:OXFORD 功能描述:low cost asynchronous 16-bit PC card or Compact Flash UART device |
| OXCF950B | 制造商:PLX 制造商全稱:PLX 功能描述:16-bit PC card/CF+ bridge to serial port |
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