MIC2590B_08 Datasheet, PDF (14/23 Pages) Micrel Semiconductor – Dual-Slot PCI Hot Plug Controller

Micrel, Inc.
MIC2590B
MIC2590B Slave Address
Target Register
Value read from MIC2590B
DATA ^{S 1 0 0 0}
START
CLK
1A0 0 0 0 0XXXA x x x x x
/A P
R/W = READ
ACKNOWLEDGE
NOT ACKNOWLEDGE
STOP
x ^{Master to slave transfer, i.e., DATA driven by master.}
x ^{Slave to master transfer, i.e., DATA driven by slave.}
Figure 7. READ_BYTE Protocol
MIC2590B Slave Address
Target Register
Value to be written to MIC2590B
DATA ^{S 1 0 0 0}
0A0 0 0 0 0XXXAXXXXX
/A P
START
R/W = WRITE
ACKNOWLEDGE
NOT ACKNOWLEDGE
STOP
CLK
X ^{Master to slave transfer, i.e., DATA driven by master.}
X ^{Slave to master transfer, i.e., DATA driven by slave.}
Figure 8. WRITE_BYTE Protocol
Register Set and Programmer’s Model
Target Register
Common
Byte Value
Label
Description
Read Write
RESULT ADC Conversion
Result Register
00h
n/a
ADCNTRL ADC Control
Register
01_h
01_h
CNTRLA Control Register
Slot A
02_h
02_h
CNTRLB Control Register
Slot B
03_h
03_h
STATA
STATB
STAT
Slot A Status
Slot B Status
Common Status
Register
04_h
04_h
05_h
05_h
06_h
06_h
Power-On
Default
n/a
00_h
00_h
00_h
00_h
00_h
00_h
September 2008
14
M9999-091808