Jameco Electronics 2000, 3000 manual Serial Port Registers, 2.Serial Port A Registers

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.

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

166 Rabbit 3000 Microprocessor