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參數(shù)資料
| 型號(hào)： | PCI4410A |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | PC CARD AND OHCI CONTROLLER |
| 中文描述： | PC卡和OHCI控制器 |
| 文件頁數(shù)： | 105/198頁 |
| 文件大小： | 892K |
| 代理商： | PCI4410A |
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5
–
9
5.5
ExCA Card Status-Change Register
The ExCA card status-change register controls interrupt routing for I/O interrupts, as well as other critical 16-bit PC
Card functions. The register enables these interrupt sources to generate an interrupt to the host. When the interrupt
source is disabled, the corresponding bit in this register always reads 0. When an interrupt source is enabled, the
corresponding bit in this register is set to indicate that the interrupt source is active. After generating the interrupt to
the host, the interrupt service routine must read this register to determine the source of the interrupt. The interrupt
service routine is responsible for resetting the bits in this register as well. Resetting a bit is accomplished by one of
two methods: a read of this register or an explicit writeback of 1 to the status bit. The choice of these two methods
is based on bit 2 (interrupt flag clear mode select) in the ExCA global control register (ExCA offset 1Eh, see
Section 5.22). See Table 5
–
7 for a complete description of the register contents.
Bit
7
6
5
4
3
2
1
0
Name
ExCA card status-change
Type
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
Register:
Type:
Offset:
Default:
ExCA card status-change
Read-only
CardBus socket address + 804h; ExCA offset 04h
00h
Table 5
–
7. ExCA Card Status-Change Register Description
BIT
SIGNAL
TYPE
FUNCTION
7
–
4
RSVD
R
Reserved. Bits 7
–
4 return 0s when read.
3
CDCHANGE
R
Card detect change. Bit 3 indicates whether a change on CD1 or CD2 occurred at the PC Card
interface. This bit is encoded as:
0 = No change is detected on either CD1 or CD2.
1 = Change is detected on either CD1 or CD2.
2
READYCHANGE
R
Ready change. When a 16-bit memory is installed in the socket, bit 2 includes whether the source of
a PCI4410A interrupt was due to a change on READY at the PC Card interface, indicating that the
PC Card is now ready to accept new data. This bit is encoded as:
0 = No low-to-high transition is detected on READY (default).
1 = Detected low-to-high transition on READY
When a 16-bit I/O card is installed, bit 2 is always 0.
1
BATWARN
R
Battery warning change. When a 16-bit memory card is installed in the socket, bit 1 indicates whether
the source of a PCI4410A interrupt was due to a battery-low warning condition. This bit is encoded as:
0 = No battery warning condition (default)
1 = Detected battery warning condition
When a 16-bit I/O card is installed, bit 1 is always 0.
0
BATDEAD//RI
R
Battery dead or status change. When a 16-bit memory card is installed in the socket, bit 0 indicates
whether the source of a PCI4410A interrupt was due to a battery-dead condition. This bit is encoded
as:
0 = STSCHG is deasserted (default).
1 = STSCHG is asserted.
Ring indicate. When an I/O card is installed in the socket and the PCI4410A device is configured for
ring-indicate operation, bit 0 indicates the status of RI.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| PCI4410AGHK | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI INTEGRATED PC CARD 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 |
| PCI4410APDV | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI INTEGRATED PC CARD 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 |
| PCI4410GHK | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| PCI4410PDV | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| PCI4450 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:PC Card and OHCI Controller |
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