参数资料
型号: SPD6729QCE
厂商: INTEL CORP
元件分类: 总线控制器
英文描述: PCMCIA BUS CONTROLLER, PQFP208
封装: MQFP-208
文件页数: 86/116页
文件大小: 1442K
代理商: SPD6729QCE
PCI-to-PC Card (PCMCIA) Controller — PD6729
Datasheet
71
Bit 3: Pulse System IRQ
This bit selects Level or Pulse mode operation of the IRQ[XX] pins (see Table 1 on page 15).
Bit 4: Speaker Enable
This bit determines whether the card -SPKR pin will drive SPKR_OUT* (see Table 3).
Bit 7: Inpack Enable
The -INPACK function is not applicable in PCI bus environments. This bit is provided for
backward-compatibility. Its setting has no effect on operations of the PD6729.
10.2
FIFO Control
Figure 12. Pulse Mode Interrupts
IRQ[XX]
HI-Z
HI-Z = high impedance
Driven low
Driven high
0
Interrupts are passed to the IRQ[XX] pin as level-sensitive.
1
When an interrupt occurs, the IRQ[XX] pin is driven with the pulse train shown in Figure 12 and
allows for interrupt sharing.
0
SPKR_OUT* is three-stated.
1
SPKR_OUT* is driven from the XOR of -SPKR from each enabled socket.
0
-INPACK pin (see Table 2) ignored.
1
-INPACK pin used to control data bus drivers during I/O read from the socket.
Register Name: FIFO Control
Index: 17h
Register Per: socket
Register Compatibility Type: ext.
Bit 7Bit 6Bit 5Bit 4Bit 3
Bit 2Bit 1Bit 0
FIFO Status /
Flush FIFO
Scratchpad Bits
RW:1
RW:0000000
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