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Chapter 2 SMPC commands

2.1 SMPC command list

SMPC commands are divided into three types: reset system management commands, non-reset system management commands, and RTC commands.
Each command is shown below.

Table 2.1 Reset system management commands 
 No 
 command name 
 Command Abbreviation 
 Command 
 Code 
 SMPC 
 Interrupt 
 SR 
 IREG 
 OREG 
 Execution time 
 sec 
min
max
 
 1 
 Master SH-2 ON 
 MSHON 
 00H 
 not used 
 not used 
 not used 
 31 
 30μ 
 
 2 
 Slave SH-2 ON 
 SSHON 
 02H 
 not used 
 not used 
 not used 
 31 
 30μ 
 
 3 
 Slave SH-2 OFF 
 SSHOFF 
 03H 
 not used 
 not used 
 not used 
 31 
 30μ 
 
 4 
 Sound ON 
 SNDON 
 06H 
 Not used 
 Not used 
 Not used 
 31 
 30μ 
 
 5 
 Sound OFF 
 SNDOFF 
 07H 
 Not used 
 Not used 
 Not used 
 31 
 30μ 
 
6
CD ON
CDON
08H
 
 Not used 
 Not used 
 Not used 
 31 
 40μ 
 
7
CD OFF
CDOFF
09H
 
 Not used 
 Not used 
 Not used 
 31 
 40μ 
 
 8 
 System reset 
 SYSRES 
 0DH 
 Not used 
 Not used 
 Not used 
 31 
 100m + α 
 9 
 Clock Change 352 Mode 
 CKCHG352 
 0EH 
 Not used 
 Not used 
 Not used 
 31 
 100m + α 
 10 
 Clock Change 320 Mode 
 CKCHG320 
 0FH 
 Not used 
 Not used 
 Not used 
 31 
 100m + α 
 11 
 NMI Request 
 NMIREQ 
 18H 
 Not used 
 Not used 
 Not used 
 31 
 30μ 
 
 12 
 Reset Enable 
 RESENAB 
 19H 
 Not used 
 Not used 
 Not used 
 31 
 30μ 
 
 13 
 Reset Disable 
 RESDISA 
 1AH 
 Not used 
 Not used 
 Not used 
 31 
 30μ

Table 2.2 Non-reset system management commands 
 No 
 command name 
 Command Abbreviation 
 Command 
 Code 
 SMPC 
 Interrupt 
 SR 
 IREG 
 OREG 
 Execution time 
 sec 
min
max
 
 1 
 Interrupt back 
 INTBACK 
 10H 
 Use 
 Use 
 0 ~ 2 
 0 ~ 31 
 
 320m 
 2 
 SMPC memory settings 
 SETSMEM 
 17H 
 Not used 
 Not used 
 0-3 
 31 
 40μ

Table 2.3 RTC commands 
 No 
 command name 
 Command Abbreviation 
 Command 
 Code 
 SMPC 
 Interrupt 
 SR 
 IREG 
 OREG 
 Execution time 
 sec 
min
max
 
 1 
 Time setting 
 SETTIME 
 16H 
 Not used 
 Not used 
 0-6 
 31 
 70μ

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