參數(shù)資料
型號: PCI1520-EP
英文描述: Military Enhanced Plastic PC Card Controllers Data Manual
中文描述: 軍事增強(qiáng)塑料PC卡控制器數(shù)據(jù)手冊
文件頁數(shù): 76/125頁
文件大?。?/td> 716K
代理商: PCI1520-EP
4
23
4.33 Device Control Register
The device control register is provided for PCI1130 compatibility and contains bits that are shared between functions
0 and 1. The interrupt mode select is programmed through this register which is composed of PCI1520 global bits.
The socket-capable force bits are also programmed through this register. See Table 4
12 for a complete description
of the register contents.
Bit
7
6
5
4
3
2
1
0
Name
Device control
Type
RW
RW
RW
R
RW
RW
RW
RW
Default
0
1
1
0
0
1
1
0
Register:
Offset:
Type:
Default:
Device control
92h (functions 0, 1)
Read-only, Read/Write
66h
Table 4
12. Device Control Register Description
BIT
SIGNAL
TYPE
FUNCTION
7
SKTPWR_LOCK
RW
Socket power lock bit. When this bit is set to 1, software cannot power down the PC Card socket while
in D3. This may be necessary to support wake on LAN or RING if the operating system is programmed
to power down a socket when the CardBus controller is placed in the D3 state.
6
3VCAPABLE
RW
3-V socket capable force
0 = Not 3-V capable
1 = 3-V capable (default)
5
IO16V2
RW
Diagnostic bit. This bit defaults to 1.
4
3
RSVD
R
Reserved. Bit 4 returns 0 when read.
TEST
RW
TI test. Only a 0 should be written to bit 3.
2
1
INTMODE
RW
Interrupt signaling mode. Bits 2 and 1 select the interrupt signaling mode. The interrupt signaling
mode bits are encoded:
00 = Parallel PCI interrupts only
01 = Parallel IRQ and parallel PCI interrupts
10 = IRQ serialized interrupts and parallel PCI interrupt
11 = IRQ and PCI serialized interrupts (default)
0
RSVD
RW
Reserved. Bit 0 is reserved for test purposes. Only 0 should be written to this bit.
This bit is global and is accessed only through function 0.
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