Chapter 2 SMPC Commands

■ 2.1 SMPC command list

SMPC commands can be 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	unused	unused	unused	31	30μ
2	○	Slave SH-2 ON	SSHON	02H	unused	unused	unused	31	30μ
3	○	Slave SH-2 OFF	SSHOFF	03H	unused	unused	unused	31	30μ
Four	○	Sound ON	SNDON	06H	unused	unused	unused	31	30μ
Five	○	Sound off	SNDOFF	07H	unused	unused	unused	31	30μ
6	×	CD ON	CDON	08H	unused	unused	unused	31	40μ
7	×	CD OFF	CDOFF	09H	unused	unused	unused	31	40μ
8	×	Whole system reset	SYSRES	0DH	unused	unused	unused	31	100m + α
9	×	Clock change 352 mode	CKCHG352	0EH	unused	unused	unused	31	100m + α
Ten	×	Clock change 320 mode	CKCHG320	0FH	unused	unused	unused	31	100m + α
11	○	NMI request	NMIREQ	18H	unused	unused	unused	31	30μ
12	○	Reset enable	RESENAB	19H	unused	unused	unused	31	30μ
13	○	Reset disable	RESDISA	1AH	unused	unused	unused	31	30μ

X mark indicates prohibition of use by users

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	unused	unused	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	unused	unused	0-6	31	70μ