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： 軍事增強塑料PC卡控制器數(shù)據(jù)手冊
文件頁數(shù)： 85/125頁
文件大?。?/td> 716K
代理商： PCI1520-EP
4
–
32
4.44 General-Purpose Output Register
The general-purpose output register is used for control of the general-purpose outputs. Access this register only
through function 0. See Table 4
–
20 for a complete description of the register contents.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
General-purpose output
Type
R
R
R
R
R
R
R
R
R
R
R
RW
RW
RW
RW
RW
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
General-purpose output
AEh (function 0)
Read-only, Read/Write
0000h
Table 4
–
20. General-Purpose Output Register Description
BIT
SIGNAL
TYPE
FUNCTION
15
–
5
RSVD
R
Reserved. Bits 15
–
5 return 0s when read.
4
GPO4_DATA
RW
GPO4 data bit. The value written to bit 4 represents the logical value of the data driven to the MFUNC5
terminal if configured as GPO4. Read transactions return the last data value written.
3
GPO3_DATA
RW
GPIO3 data bit. The value written to bit 3 represents the logical value of the data driven to the MFUNC4
terminal if configured as GPO3. Read transactions return the last data value written.
2
GPO2_DATA
RW
GPO2 data bit. The value written to bit 2 represents the logical value of the data driven to the MFUNC2
terminal if configured as GPO2. Read transactions return the last data value written.
1
GPO1_DATA
RW
GPO1 data bit. The value written to bit 1 represents the logical value of the data driven to the MFUNC1
terminal if configured as GPO1. Read transactions return the last data value written.
0
GPO0_DATA
RW
GPO0 data bit. The value written to bit 0 represents the logical value of the data driven to the MFUNC0
terminal if configured as GPO0. Read transactions return the last data value written.
4.45 Serial-Bus Data Register
The serial-bus data register is for programmable serial-bus byte reads and writes. This register represents the data
when generating cycles on the serial bus interface. To write a byte, this register must be programmed with the data,
the serial bus index register must be programmed with the byte address, the serial-bus slave address must be
programmed with the 7-bit slave address, and the read/write indicator bit must be reset.
On byte reads, the byte address is programmed into the serial-bus index register
,
the serial bus slave address register
must be programmed with both the 7-bit slave address and the read/write indicator bit, and bit 5 (REQBUSY) in the
serial bus control and status register (PCI offset B3h, see Section 4.48)
must be polled until clear. Then the contents
of this register are valid read data from the serial bus interface. See Table 4
–
21 for a complete description of the
register contents.
Bit
7
6
5
4
3
2
1
0
Name
Serial-bus data
Type
RW
RW
RW
RW
RW
RW
RW
RW
Default
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
Serial-bus data
B0h (function 0)
Read/Write
00h
Table 4
–
21. Serial-Bus Data Register Description
BIT
SIGNAL
TYPE
FUNCTION
7
–
0
SBDATA
RW
Serial-bus data. This bit field represents the data byte in a read or write transaction on the serial interface.
On reads, the REQBUSY bit must be polled to verify that the contents of this register are valid.
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