SMM105

Preliminary Information

Summit Microelectronics, Inc

2068 1.8 09/20/05

18

DEFAULT CONFIGURATION REGISTER SETTINGS – SMM105NC-160

Register

Contents

Function

R00

02

Nominal Voltage is set to 1.800V (MSB)

R01

C7

Nominal Voltage is set to 1.800V (LSB)

R04

25

ADOC is enabled, Trim polarity is inverse, Fast Convergence, VREF External, Fault

Latched by a Fault Condition

R05

05

Slave address is 0101, Start Delay set to 0.2ms

R06

03

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 OV

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

02

Margin High Voltage is set to 1.902V (MSB)

R21

A1

Margin High Voltage is set to 1.902V (LSB)

R30

02

Margin Low Voltage is set to 1.702V (MSB)

R31

F0

Margin Low Voltage is set to 1.702V (LSB)

R40

80

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 is SMM105NC-160, is programmed as described above

and tested over the commercial temperature range. Application Note 38 contains a

complete description of the Windows GUI and the default settings of each of the 16

individual Configuration Registers.