ZSSC3123AI2 datasheet(29/63 Pages) IDT

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ZSSC3123 Datasheet

January 26, 2016

Power Down

Command wakes ZSSC3123

ZSSC3123

Core Activity

Serial Interface

Activity

Write new corrected signal

measurement to output register

2C™ or SPI)

Power Down

Valid read

occurs

Cap

Conv

Temp

Conv

Ready Pin

Cap

Calc

Temp

Calc

Figure 3.7

2C™ and SPI Data Fetching in Sleep Mode

Note: See section 3.2 for timing of measurements.

3.4

Status and Diagnostics

Status bits (the two MSBs of the fetched high data byte, see Table 3.4) are provided in I

2C™ and SPI but not in PDM. The

status bits are used to indicate the current state of the fetched data. Diagnostic detection is available in I

2C™, SPI and PDM.

In I

2C™ and SPI diagnostics are reported as a saturated high capacitance and temperature output (see Table 3.5). In PDM,

diagnostics are reported as a railed high output level for both PDM_C (capacitive PDM) and PDM_T (temperature PDM). If a

diagnostic value is reported then one or more of the errors shown in Table 3.6 occurred in normal operation.

Configuration EEPROM diagnostics are detected at initial power-up of the ZSSC3123 or a wakeup in Sleep Mode and are

permanent diagnostics. All other diagnostics are detected during a measurement cycle and reported in the subsequent data

fetch for I

2C™ or SPI or output register update for PDM.

ZSSC3123AI2 Datasheet(PDF) 29 Page - Integrated Device Technology