參數(shù)資料
型號： MIC2593-2BTQ
廠商： 意法半導(dǎo)體
英文描述： Dual-Slot PCI Hot Plug Controller
中文描述： 雙插槽的PCI熱插拔控制器
文件頁數(shù)： 15/26頁
文件大小： 170K
代理商： MIC2593-2BTQ
April 2004
15
M9999-042204
MIC2593
Micrel
MIC2593 Register Set and Programmer
’
s Model
Target Register
Command Byte Value
Power-On
Default
Label
Description
Read
Write
RESERVED
Do not Use
00
h
01
h
02
h
03
h
04
h
05
h
06
h
n/a
n/a
RESERVED
Do not Use
n/a
n/a
CNTRLA
Control Register Slot A
02
h
03
h
04
h
05
h
06
h
00
h
00
h
00
h
00
h
CNTRLB
Control Register Slot B
STATA
Slot A Status
STATB
Slot B Status
CS
Common Status Register
xxxx 0000
b
Undefined
Reserved
Reserved / Do Not Use
07
h
- FF
h
07
h
- FF
h
Table 4. MIC2593 Register Addresses
S 1
0
0
1
A2 A1 A0
0 A 0
0
0
0
0
0 X X A
D4
D5
D6
D3 D2 D1 D0
D7
A P
MIC2593 Slave Address
DATA
CLK
Command Byte to MIC2593
Data Byte to MIC2593
START
STOP
R/W = WRITE
ACKNOWLEDGE
ACKNOWLEDGE
ACKNOWLEDGE
Master to slave transfer,
i.e., DATA driven by master.
Slave to master transfer,
i.e., DATA driven by slave.
Figure 9. WRITE_BYTE Protocol
S 1
0
0
1 A2 A1 A0
A2 A1 A0
0 A 0
0
0
0
0
0 X X A S 1
1
1
0
0
D4
D5
D6
D3 D2 D1 D0
A
D7
/A P
MIC2593 Slave Address
DATA
CLK
Command Byte to MIC2593
MIC2593 Slave Address
Data Read From MIC2593
START
START
STOP
R/W = WRITE
R/W = READ
ACKNOWLEDGE
ACKNOWLEDGE
ACKNOWLEDGE
NOT ACKNOWLEDGE
Master to slave transfer,
i.e., DATA driven by master.
Slave to master transfer,
i.e., DATA driven by slave.
Figure 10. READ_BYTE Protocol
S 1
0
0
1
A2 A1 A0
1 A
D4
D5
D6
D3 D2 D1 D0
D7
/A P
MIC2593 Slave Address
DATA
CLK
Byte Read from MIC2593
START
STOP
R/W = READ
ACKNOWLEDGE
NOT ACKNOWLEDGE
Master to slave transfer,
i.e., DATA driven by master.
Slave to master transfer,
i.e., DATA driven by slave.
Figure 11. RECEIVE_BYTE Protocol
Inputs
MIC2593 Slave Address
A2
A1
A0
Binary
Hex
0
0
0
1000 000
b
1000 001
b
1000 010
b
1000 011
b
1000 100
b
1000 101
b
1000 110
b
1000 111
b
80
h
82
h
84
h
86
h
88
h
8A
h
8C
h
8E
h
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Table 3. MIC2593 SMBus Addressing
dure may be used. To perform a Receive_Byte operation, the
host sends an address byte to select the slave MIC2593, with
the R/W bit set to the high (read) state, and then retrieves the
data byte. Figures 9 through 11 show the formats for these
data read and data write procedures.
The Command Register is eight bits (one byte) wide. This
byte carries the address of the MIC2593
’
s register to be
operated upon. The command byte values corresponding to
the various MIC2593 register addresses are shown in Table
4. Command byte values other than 0000 0XXX
b
= 00
h
- 07
h
are reserved and should not be used.
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