MIC3003GML datasheet(15/75 Pages) MICREL

15 / 75 page

Micrel, Inc.

MIC3003

November 2009

M9999-111209-C

hbwhelp@micrel.com or (408) 955-1690

Serial Interface Address Maps

Address

(Decimal)

Field Size

(Bytes)

Name

Description

0 –95

Serial ID defined by SFP MSA

General-purpose NVRAM; R/W under valid OEM password.

96 – 127

Vendor Specific

Vendor specific EEPROM

128 – 255

128

Reserved

Reserved for future use. General-purpose NVRAM; R/W under

valid OEM password.

Table 1. MIC3003 Serial Interface Address Map, Device Address = A0h

Address(s)

Hex

Dec

Field Size

(Bytes)

Name

Description

00-27

0-39

Alarm and Warning Thresholds

High/low limits for warnings and alarms; writeable using the

OEM password; read-only otherwise.

28-37

40-55

Reserved

Reserved – do not write; reads undefined.

38-5B

56-91

Calibration Constants

Numerical constants for external calibration; writeable using

the OEM password; read-only otherwise.

5C-5E

92-94

Reserved

Reserved – do not write; reads undefined.

Checksum

General-purpose NVRAM; writeable using the OEM password;

read-only otherwise.

60-69

96-105

Analog Data

Real time analog parameter data.

6A-6D

106-109

Reserved

Reserved – do not write; reads undefined.

110

Control/Status Register

Control and status bits.

111

Rate Select Control

Bits [7-6] control the use of the RS0 and RS1 inputs and the

SRS0 and SRS1 register bits.

70-71

112-113

Alarm Flags

Alarm status bits; read-only.

72-73

114-115

Reserved

Reserved – do not write; reads undefined.

74-75

116-117

Warning Flags

Warning status bits; read-only.

118

Extended Control/Status

Additional control and status bits.

119

Reserved

Reserved – do not write; reads undefined.

78-7E

120-126

OEMPW

OEM password entry field. The four-byte OEM password

location can be selected to be 78h-7Bh (120-123) by setting

OEMCFG5 bit 2 to 0 (default) or 7Bh-7Eh (123-126) by setting

OEMCFG5 bit 2 to a one.

127

Vendor-specific

Vendor specific. Reserved – do not write; reads undefined.

80-F7

128-247

120

User Scratchpad

User-writeable EEPROM. General-purpose NVRAM.

F8-F9

248-249

Alarms Masks

Bit = 0: Corresponding alarm not masked.

Bit = 1: Corresponding alarm masked.

FA-FB

250-251

Warnings Masks

Bit = 0: Corresponding warning not masked.

Bit = 1: Corresponding warning masked.

FC-FD

252-253

Reserved

Reserved – do not write; reads undefined.

254

USRCTL

End-user control and status bits.

255

RESETOUT

Bits [2:0] of this register control the QGPO reset output (pin

17) If OEMCFG3 bit 7 is set to 1.

Table 2. MIC3003 Serial Interface Address Map, Device Address = A2

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