Hitachi SH7760 Solution Engine2 Overview page 57

6.2.9 Error Response during a Write Operation
Figure 6.11 shows an error response format for the write command at error occurrence. The power supply
controller returns a NAK code and an error code in this order as an error response.
(1) NAK code
This code is fixed at NAK (0x15).
(2) Error code
Table 6.2 summarizes the error codes.
(1) NAK code
(1 byte)
Figure 6.11 Error Response during a Write Operation
Table 6.2 Error Codes
Error No Error type
0x01 Communication error
0x02 Invalid function code
0x03 Invalid register number
0x04 Register size error
0x05 Data size error
54
(2) Error No.
(1 byte)