MIC2590B Datasheet, PDF (14/24 Pages) Micrel Semiconductor – Dual-Slot PCI Hot Plug Controller

MIC2590B
MIC2590B Slave Address
Target Register
Value read from MIC2590B
DATA ^{S 1 0 0 0 A2 A1 A0 1 A 0 0 0 0 0 X X X A x x x x x x x x /A P}
START
R/W = READ
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 7. READ_BYTE Protocol
Micrel
MIC2590B Slave Address
Target Register
Value to be written to MIC2590B
DATA ^{S 1 0 0 0 A2 A1 A0 0 A 0 0 0 0 0 X X X A X X X X X X X X /A P}
CLK
START
R/W = WRITE
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 8. WRITE_BYTE Protocol
Register Set and Programmer’s Model
Label
Target Register
Description
Command Power-On
Byte Value Default
Read Write
RESULT ADC Conversion Result Register 00_h n/a n/a
ADCNTRL ADC Control Regster
01_h 01_h 00_h
CNTRLA Control Register Slot A
02_h 02_h 00_h
CNTRLB Control Register Slot B
03_h 03_h 00_h
STATA Slot A Status
04_h 04_h 00_h
STATB Slot B Status
05_h 05_h 00_h
STAT
Common Status Register
06_h 06_h 00_h
Table 4. MIC2590B Register Addresses
MIC2590B
14
August 2002