Jameco Electronics 2000 Manuel D’Utilisation
166
Rabbit 3000 Microprocessor
12.2 Serial Port Registers
Each serial port has 6 registers shown in the tables below. The status, control and extended
registers may have somewhat different formats for different serial ports.
registers may have somewhat different formats for different serial ports.
Table 12-2. Serial Port A Registers
Register Name
Mnemonic
I/O Address
R/W
Reset
Serial Port A Data Register
SADR
0xC0
R/W
xxxxxxxx
Serial Port A Address Register
SAAR
0xC1
W
xxxxxxxx
Serial Port A Long Stop Register
SALR
0xC2
W
xxxxxxxx
Serial Port A Status Register
SASR
0xC3
R
0xx00000
Serial Port A Control Register
SACR
0xC4
W
xx000000
Serial Port A Extended Register
SAER
0xC5
W
00000000
Table 12-3. Serial Port B Registers
Register Name
Mnemonic
I/O Address
R/W
Reset
Serial Port B Data Register
SBDR
0xD0
R/W
xxxxxxxx
Serial Port B Address Register
SBAR
0xD1
W
xxxxxxxx
Serial Port B Long Stop Register
SBLR
0xD2
W
xxxxxxxx
Serial Port B Status Register
SBSR
0xD3
R
0xx00000
Serial Port B Control Register
SBCR
0xD4
W
xx000000
Serial Port B Extended Register
SBER
0xD5
W
00000000
Table 12-4. Serial Port C Registers
Register Name
Mnemonic
I/O Address
R/W
Reset
Serial Port C Data Register
SCDR
0xE0
R/W
xxxxxxxx
Serial Port C Address Register
SCAR
0xE1
W
xxxxxxxx
Serial Port C Long Stop Register
SCLR
0xE2
W
xxxxxxxx
Serial Port C Status Register
SCSR
0xE3
R
0xx00000
Serial Port C Control Register
SCCR
0xE4
W
xx000000
Serial Port C Extended Register
SCER
0xE5
W
00000000