RESETRESET and POWER-DOWN S3C9228/P9228
8-4
HARDWARE RESET RESET VALUES
Table 8-1 list the values for CPU and system registers, peripheral control registers, and peripheral data registers
following a RESET operation in normal operating mode. The following notation is used in these table to represent
specific RESET values:
A "1" or a "0" shows the RESET bit value as logic one or logic zero, respectively.
An 'x' means that the bit value is undefined following RESET.
A dash ('–') means that the bit is either not used or not mapped.
Table 8-1. Register Values after RESETRESET
Register Name Mnemonic Address Bit Values after RESETRESET
Dec Hex 76543210
Locations B8H–B9H are not mapped.
Timer B Control Register TBCON 202 BAH –000000–
Timer 1/A Control Register TACON 203 BBH 0000000–
Timer B Data Register TBDATA 204 BCH 11111111
Timer A Data Register TADATA 205 BDH 11111111
Timer B Counter TBCNT 206 BEH 00000000
Timer A Counter TACNT 207 BFH 00000000
A/D Converter Control Register ADCON 208 D0H ––000000
A/D Converter Data Register (high byte) ADDATAH 209 D1H XXXXXXXX
A/D Converter Data Register (low byte) ADDATAL 210 D2H ––––––X X
Oscillator Control Register OSCCON 211 D3H ––––00–0
System Clock Control Register CLKCON 212 D4H 00000000
System Flags Register FLAGS 213 D5H XXXX – – – –
Interrupt Pending Register 1 INTPND1 214 D6H 00000000
Interrupt Pending Register 2 INTPND2 215 D7H ––000000
LCD Port Control Register LOPT 216 D8H –0000000
Stack Pointer SP 217 D9H XXXXXXXX
Watch Timer Control Register WTCON 218 DAH 0000000–
Locations DBH is not mapped.
Basic Timer Control Register BTCON 220 DCH 00000000
Basic Timer Counter BTCNT 221 DDH 00000000
Locations DEH is not mapped.