MIC2590B データシートの表示（PDF） - Micrel

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MIC2590B

Dual-Slot PCI Hot Plug Controller

Micrel 

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

01h

01h

CNTRLA Control Register

Slot A

02h

02h

CNTRLB Control Register

Slot B

03h

03h

STATA

STATB

STAT

Slot A Status

Slot B Status

Common Status

Register

04h

04h

05h

05h

06h

06h

Power-On

Default

n/a

00h

00h

00h

00h

00h

00h

September 2008

14

M9999-091808

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