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| 型號(hào)： | PCI1510GVF |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | PC CARD CONTROLLERS |
| 中文描述： | PC卡控制器 |
| 文件頁(yè)數(shù)： | 53/128頁(yè) |
| 文件大?。?/td> | 735K |
| 代理商： | PCI1510GVF |
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315
The
PC Card Standard
describes the power-up sequence that must be followed by the controller when an insertion
event occurs and the host requests that the socket V
CC
and V
PP
be powered. Upon completion of this power-up
sequence, the interrupt scheme can be used to notify the host system (see Table 38), denoted by the power cycle
complete event. This interrupt source is considered an internal event, because it depends on the completion of
applying power to the socket rather than on a signal change at the PC Card interface.
3.7.2
Interrupt Masks and Flags
Host software may individually mask (or disable) most of the potential interrupt sources listed in Table 38 by setting
the appropriate bits in the controller. By individually masking the interrupt sources listed, software can control those
events that cause an interrupt. Host software has some control over the system interrupt the controller asserts by
programming the appropriate routing registers. The controller allows host software to route PC Card CSC and PC
Card functional interrupts to separate system interrupts. Interrupt routing somewhat specific to the interrupt signaling
method used is discussed in more detail in the following sections.
When an interrupt is signaled by the controller, the interrupt service routine must determine which of the events listed
in Table 37 caused the interrupt. Internal registers in the controller provide flags that report the source of an interrupt.
By reading these status bits, the interrupt service routine can determine the action to be taken.
Table 37 details the registers and bits associated with masking and reporting potential interrupts. All interrupts can
be masked except the functional PC Card interrupts, and an interrupt status flag is available for all types of interrupts.
Notice that there is not a mask bit to stop the controller from passing PC Card functional interrupts through to the
appropriate interrupt scheme. These interrupts are not valid until the card is properly powered, and there should never
be a card interrupt that does not require service after proper initialization.
Table 37 lists the various methods of clearing the interrupt flag bits. The flag bits in the ExCA registers (16-bit PC
Card-related interrupt flags) can be cleared using two different methods. One method is an explicit write of 1b to the
flag bit to clear and the other is by reading the flag bit register. The selection of flag bit clearing methods is made by
bit 2 (IFCMODE) in the ExCA global control register (ExCA offset 1Eh/5Eh/81Eh, see Section 5.20), and defaults to
the flag-cleared-on-read method.
The CardBus-related interrupt flags can be cleared by an explicit write of 1b to the interrupt flag in the socket event
register (see Section 6.1). Although some of the functionality is shared between the CardBus registers and the ExCA
registers, software should not program the chip through both register sets when a CardBus card is functioning.
3.7.3
Using Parallel IRQ Interrupts
The seven multifunction terminals, MFUNC6MFUNC0, implemented in the controller can be routed to obtain a
subset of the ISA IRQs. The IRQ choices provide ultimate flexibility in PC Card host interruptions. To use the parallel
ISA-type IRQ interrupt signaling, software must program the device control register (PCI offset 92h, see
Section 4.33), to select the parallel IRQ signaling scheme. See Section 4.30,
Multifunction Routing Register
, for
details on configuring the multifunction terminals.
A system using parallel IRQs requires (at a minimum) one PCI terminal, INTA, to signal CSC events. This requirement
is dictated by certain card and socket-services software. The INTA requirement calls for routing the MFUNC0 terminal
for INTA signaling. This leaves (at a maximum) six different IRQs to support legacy 16-bit PC Card functions.
As an example, suppose the six IRQs used by legacy PC Card applications are IRQ3, IRQ4, IRQ5, IRQ10, IRQ11,
and IRQ15. The multifunction routing register must be programmed to a value of 0FBA 5432h. This value routes the
MFUNC0 terminal to INTA signaling and routes the remaining terminals as illustrated in Figure 314. Not shown is
that INTA must also be routed to the programmable interrupt controller (PIC), or to some circuitry that provides parallel
PCI interrupts to the host.
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相關(guān)代理商/技術(shù)參數(shù) |
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| PCI1510PGE | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI Single Slot PC CardBus Controller 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 |
| PCI1510PGEG4 | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI Single Slot PC CardBus Controller 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 |
| PCI1510RGVF | 功能描述:IC PC CARD CONTROLLER 253-BGA RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| PCI1510RZVF | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI PC CARD CONTROLLERS 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 |
| PCI1510ZGU | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI Single Slot PC CardBus Controller 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 |
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