ZSSC3123AI2R datasheet(30/62 Pages) RENESAS

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ZSSC3123 Datasheet

Nov 19, 2021

Page 30

Status Bits (I2C or SPI)

PDM Output

Definition

10BIN

Not applicable

Command Mode: The ZSSC3123 is in Command Mode.

11BIN

Not used

Table 17. Diagnostic Detection

I2C or SPI Output

PDM Output

Definition

Saturated output 3FFFHEX

High output (railed) level

A diagnostic fault has occurred in normal operation (see the

following table).

Table 18. Normal Operation Diagnostic Table

Diagnostic

Type

Definition

Configuration Error

Permanent

An EEPROM or RAM parity error occurred in the initial

loading of the configuration registers.

RAM Parity Error

Transient

A RAM parity error occurred during a microcontroller

instruction in the last measurement cycle.

EEPROM Error

Transient

A double-bit error detection (DED) EEPROM error occurred

in the last measurement cycle (see section 10.4.1).

Math Warning

Transient

An internal math overflow has occurred in the last

measurement cycle and the output might be invalid.

10.4.1 EEPROM Error Detection and Correction

The contents of the EEPROM are protected via error checking and correction (ECC). Each of the 32 16-bit words contains 6 parity bits enabling

single-bit error correction (SEC) and double-bit error detection (DED) per word. In Command Mode both SEC and DED errors are reported in

the response byte (see section 11.3). If the fetched EEPROM data has a DED error, then the fetched data will be incorrect; however, if a SEC

error was reported then the fetched data has been corrected, and it is the user’s choice to write the data back to attempt to correct the error.

During Normal Operation Mode, a diagnostic will be flagged on any DED error, but an SEC error will be automatically corrected and not flagged

as a diagnostic.

10.4.2 Alarm Diagnostics

The alarm outputs do not report diagnostics. If diagnostics are needed with alarm outputs, then either digital or PDM outputs must also be used.

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