Toshiba TLCS-900/H1 Series Manual page 24

(2) I/O registers setting by boot program
Table 3.21.5 shows I/O register setting by boot program.
Take particular note of these set values when using an application system program
which continues to run without asserting a reset after a boot sequence is executed .
Also take note of the status of the CPU registers and internal RAM following
execution of a boot sequence.
Table 3.21.5 I/O Register Setting by Boot Program
Symbol Set Value
WDMOD 00H
WDCR B1H
SYSCR0 80H
SYSCR1 00H
SYSCR2 2CH
PLLCR0 40H
00H
PLLCR1 80H
INTEUSB 04H
INTETC01 44H
Note: The setting values for NAND flash, UART and USB are not shown. Set
each register where these functions are used in the system.
Set Content
Stop watchdog timer.
Disable watchdog timer.
Set system clock.
Set system clock.
Set system clock.
Where USB is used for boot, set to use PLL
output clock for f .
FPH
Where USB is not used for boot, set not to use PLL
output clock for f .
FPH
Set to PLL ON. Not affected by boot method.
Set USB interrupt level.
Set INTTC interrupt level.
92CH21-441
TMP92CH21
2006-09-15