ZSSC3123AI2 datasheet(47/63 Pages) IDT

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ZSSC3123 Datasheet

January 26, 2016

5.1.1

IDT Configuration Register (ZMDI_Config, EEPROM Word 02HEX)

This register is loaded at power-on reset and upon exiting Command Mode using a Start_NOM command.

Table 5.2

ZMDI_Config Bit Assignments

Bit Range

IC Default

Name

Description and Notes

Measurement_Mode

0 = Update Mode

1 = Sleep Mode

2:1

00B

Power_Down_Period

Power Down Period:

†††

00B = 0ms

01B = 5ms

10B = 25ms

11B = 125ms

Scale_Sot_Tc

Scales the SOT TC Terms:

0 = Scale x 1

1 = Scale x 2

Gain4x_C

Multiply Gain_1 and Gain_2 by

0 = multiply by 1

1 = multiply by 4

7:5

000B

EEPROM_lock

011B = locked

All other = unlocked

When EEPROM is locked, the internal charge pump is

disabled and the EEPROM can no longer be programmed.

Note: If the EEPROM was accidentally locked, see section 5

for instructions for unlocking it.

10:8

011B

Comm_lock

011B = locked

All other = unlocked

When communication is locked, I

2C™ communication will

only respond to its programmed address. Otherwise if

communication is unlocked, I

2C™ will respond to any

address.

†††

All time values shown are typical; for the worst case values, multiply by 1.1 (nominal frequency ±10%).

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