SMM205

Preliminary Information

Summit Microelectronics, Inc

2069 1.4 6/23/03

18

DEFAULT CONFIGURATION REGISTER SETTINGS – SMM205F-167

Register

Contents

Function

R00

01

Channel A Nominal Voltage is set to 2.503V (MSB)

R01

FF

Channel A Nominal Voltage is set to 2.503V (MSB)

R02

02

Channel B Nominal Voltage is set to 1.801V (MSB)

R03

C6

Channel B Nominal Voltage is set to 1.801V (MSB)

R04

AF

Channel A and B ADOC is enabled, Trim polarity is inverse, Fast Convergence,

VREF External, Fault Latched by a Fault Condition

R05

05

Slave address is 0101

R06

28

No Write Command Required to Activate ADOC, Internal Regulator set to 3.6V,

Fault Output Enabled While Margining, Configuration Registers Unlocked, COMP1

and COMP2 are set to sense UV

R08

00

Margin Command Bits

R0C

12

Stores VREF_CNTL value set to 1.25

R0D

50

Stores VREF_CNTL value set to 1.25

R20

01

Channel A - Margin High Voltage is set to 2.805V (MSB)

R21

C8

Channel A - Margin High Voltage is set to 2.805V (LSB)

R22

02

Channel B - Margin High Voltage is set to 2.100V (MSB)

R23

61

Channel B - Margin High Voltage is set to 2.100V (LSB)

R30

02

Channel A - Margin Low Voltage is set to 2.201V (MSB)

R31

45

Channel A - Margin Low Voltage is set to 2.201V (LSB)

R32

03

Channel B - Margin Low Voltage is set to 1.501V (MSB)

R33

54

Channel B - Margin Low Voltage is set to 1.501V (LSB)

R40

00

Margin Command Status Bits

R41

03

READY and START pin Polarities set to Active High

R42

FF

Write Protect

R44

00

Fault Status Bits

RC1

The default device ordering number — SMM205F-167 — is programmed as described

above and tested over the commercial temperature range. Application Note 41 contains a

complete description of the Windows GUI and the default settings of each of the 22

individual Configuration Registers.