Samsung Microcassette Recorder 8-Bit CMOS Microcontroller Benutzerhandbuch
RESET
RESET 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
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
RESET
RESET
Register Name
Mnemonic
Address
Bit Values after
RESET
RESET
Dec
Hex
7
6
5
4
3
2
1
0
Locations B8H–B9H are not mapped.
Timer B Control Register
TBCON
202
BAH
–
0
0
0
0
0
0
–
Timer 1/A Control Register
TACON
203
BBH
0
0
0
0
0
0
0
–
Timer B Data Register
TBDATA
204
BCH
1
1
1
1
1
1
1
1
Timer A Data Register
TADATA
205
BDH
1
1
1
1
1
1
1
1
Timer B Counter
TBCNT
206
BEH
0
0
0
0
0
0
0
0
Timer A Counter
TACNT
207
BFH
0
0
0
0
0
0
0
0
A/D Converter Control Register
ADCON
208
D0H
–
–
0
0
0
0
0
0
A/D Converter Data Register (high byte)
ADDATAH
209
D1H
X
X
X
X
X
X
X
X
A/D Converter Data Register (low byte)
ADDATAL
210
D2H
–
–
–
–
–
–
X
X
Oscillator Control Register
OSCCON
211
D3H
–
–
–
–
0
0
–
0
System Clock Control Register
CLKCON
212
D4H
0
0
0
0
0
0
0
0
System Flags Register
FLAGS
213
D5H
X
X
X
X
–
–
–
–
Interrupt Pending Register 1
INTPND1
214
D6H
0
0
0
0
0
0
0
0
Interrupt Pending Register 2
INTPND2
215
D7H
–
–
0
0
0
0
0
0
LCD Port Control Register
LOPT
216
D8H
–
0
0
0
0
0
0
0
Stack Pointer
SP
217
D9H
X
X
X
X
X
X
X
X
Watch Timer Control Register
WTCON
218
DAH
0
0
0
0
0
0
0
–
Locations DBH is not mapped.
Basic Timer Control Register
BTCON
220
DCH
0
0
0
0
0
0
0
0
Basic Timer Counter
BTCNT
221
DDH
0
0
0
0
0
0
0
0
Locations DEH is not mapped.