ZSSC3123AI2R datasheet(44/67 Pages) RENESAS

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ZSSC3123 Datasheet

August 16, 2018

For all commands except EEPROM Read and Get Revision, the data fetch should be terminated after the response byte is read. If the command

was a Get Revision, then the user will fetch the one-byte Revision value as shown in Figure 26, example 2. The revision is coded with the upper

nibble being the letter corresponding to a full layer change and the lower nibble being the metal change number, for example A0. If the command

was an EEPROM Read, then the user will fetch two more bytes as shown in Figure 26, example 3. If a Corrected EEPROM Error diagnostic

was flagged after an EEPROM read, the user has the option to write this data back to attempt to fix the error.

Instead of polling to determine if a command has finished executing, the user can use the Ready pin. In this case, wait for the Ready pin to rise,

which indicates that the command has executed. Then a data fetch can be performed to get the response and data (see Figure 26). See section

10.6.6 for more information on the Ready pin.

Table 26. Response Bits

Encoding

Name

Description

00BIN

Busy

The command is busy executing.

01BIN

Positive Acknowledge

The command executed successfully.

10BIN

Negative Acknowledge

The command was not recognized or an EEPROM write was attempted

while the EEPROM was locked.

Table 27. Command Diagnostic Bits

Bit Position

Name

Description

Corrected EEPROM Error

A corrected EEPROM error occurred during execution of the last

command.

Uncorrectable EEPROM Error

An uncorrectable EEPROM error during execution of the last command.

RAM Parity Error

A RAM parity error occurred during a microcontroller instruction in the

execution of the last command.

Configuration Error

An EEPROM or RAM parity error occurred in the initial loading of the

configuration registers.

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