Appendix B.

B.1 Default Values for all the Peripheral Control Registers

The default values for all of the peripheral control registers are shown in this appendix. The registers within the CPU affected by reset are the Stack Pointer (SP), the Program Counter (PC), the IIR register, the EIR register, and the IP register. The IP register is set to all ones (disabling all interrupts), while all of the other listed CPU registers are reset to all zeros.

Register Name	Mnemonic	I/O Address	R/W	Reset
Global Control/Status Register	GCSR	00000000	R/W	11000000
Real Time Clock Control Register	RTCCR	00000001	W	00000000
Real Time Clock Byte 0 Register	RTC0R	00000010	R/W	xxxxxxxx
Real Time Clock Byte 1 Register	RTC1R	00000011	R	xxxxxxxx
Real Time Clock Byte 2 Register	RTC2R	00000100	R	xxxxxxxx
Real Time Clock Byte 3 Register	RTC3R	00000101	R	xxxxxxxx
Real Time Clock Byte 4 Register	RTC4R	00000110	R	xxxxxxxx
Real Time Clock Byte 5 Register	RTC5R	00000111	R	xxxxxxxx
Watch-Dog Timer Control Register	WDTCR	00001000	W	00000000
Watch-Dog Timer Test Register	WDTTR	00001001	W	00000000
Global Clock Modulator Register	GCMR	00001010	W	xxxxx000
Breakpoint/Debug Control Register	BDCR	00001100	W	0xxxxxxx
Global Output Control Register	GOCR	00001110	W	00000000
Global Clock Double Register	GCDR	00001111	W	00000000
MMU Instruction/Data Register	MMIDR	00010000	R/W	00000000
MMU Common Base Register	STACKSEG	00010001	R/W	00000000
MMU Bank Base Register	DATASEG	00010010	R/W	00000000
MMU Common Bank Area Register	SEGSIZE	00010011	R/W	11111111
Memory Bank 0 Control Register	MB0CR	00010100	W	00001000
Memory Bank 1 Control Register	MB1CR	00010101	W	xxxxxxxx
Memory Bank 2 Control Register	MB2CR	00010110	W	xxxxxxxx
Memory Bank 3 Control Register	MB3CR	00010111	W	xxxxxxxx
MMU Expanded Code Register	MECR	00011000	R/W	xxxxx000
Slave Port Data 0 Register	SPD0R	00100000	R/W	xxxxxxxx
Slave Port Data 1 Register	SPD1R	00100001	R/W	xxxxxxxx
Slave Port Data 2 Register	SPD2R	00100010	R/W	xxxxxxxx
Slave Port Status Register	SPSR	00100011	R	00000000
Slave Port Control Register	SPCR	00100100	R/W	0xx00000
Global ROM Configuration Register	GROM	00101100	R	0xx00000
Global RAM Configuration Register	GRAM	00101101	R	0xx00000
Global CPU Configuration Register	GCPU	00101110	R	0xx00001
Global Revision Register	GREV	00101111	R	0xx00000
Port A Data Register	PADR	00110000	R/W	xxxxxxxx
Port B Data Register	PBDR	01000000	R/W	00xxxxxx
Port B Data Direction Register	PBDDR	01000111	W	11000000
Port C Data Register	PCDR	01010000	R/W	x1x1x1x1
Port C Function Register	PCFR	01010101	W	x0x0x0x0
Port D Data Register	PDDR	01100000	R/W	xxxxxxxx
Port D Control Register	PDCR	01100100	W	xx00xx00
Port D Function Register	PDFR	01100101	W	xxxxxxxx
Port D Drive Control Register	PDDCR	01100110	W	xxxxxxxx
Port D Data Direction Register	PDDDR	01100111	W	00000000
Port D Bit 0 Register	PDB0R	01101000	W	xxxxxxxx
Port D Bit 1 Register	PDB1R	01101001	W	xxxxxxxx
Port D Bit 2 Register	PDB2R	01101010	W	xxxxxxxx
Port D Bit 3 Register	PDB3R	01101011	W	xxxxxxxx
Port D Bit 4 Register	PDB4R	01101100	W	xxxxxxxx
Port D Bit 5 Register	PDB5R	01101101	W	xxxxxxxx
Port D Bit 6 Register	PDB6R	01101110	W	xxxxxxxx
Port D Bit 7 Register	PDB7R	01101111	W	xxxxxxxx
Port E Data Register	PEDR	01110000	R/W	xxxxxxxx
Port E Control Register	PECR	01110100	W	xx00xx00
Port E Function Register	PEFR	01110101	W	00000000
Port E Data Direction Register	PEDDR	01110111	W	00000000
Port E Bit 0 Register	PEB0R	01111000	W	xxxxxxxx
Port E Bit 1 Register	PEB1R	01111001	W	xxxxxxxx
Port E Bit 2 Register	PEB2R	01111010	W	xxxxxxxx
Port E Bit 3 Register	PEB3R	01111011	W	xxxxxxxx
Port E Bit 4 Register	PEB4R	01111100	W	xxxxxxxx
Port E Bit 5 Register	PEB5R	01111101	W	xxxxxxxx
Port E Bit 6 Register	PEB6R	01111110	W	xxxxxxxx
Port E Bit 7 Register	PEB7R	01111111	W	xxxxxxxx
Port F Data Register	PFDR	00111000	R/W	xxxxxxxx
Port F Control Register	PFCR	00111100	W	xx00xx00
Port F Function Register	PFFR	00111101	W	xxxxxxxx
Port F Drive Control Register	PFDCR	00111110	W	xxxxxxxx
Port F Data Direction Register	PFDDR	00111111	W	00000000
Port G Data Register	PGDR	01001000	R/W	xxxxxxxx
Port G Control Register	PGCR	01001100	W	xx00xx00
Port G Function Register	PGFR	01001101	W	xxxxxxxx
Port G Drive Control Register	PGDCR	01001110	W	xxxxxxxx
Port G Data Direction Register	PGDDR	01001111	W	00000000
Input Capture Ctrl/Status Register	ICCSR	01010110	R/W	00000000
Input Capture Control Register	ICCR	01010111	W	xxxxxx00
Input Capture Trigger 1 Register	ICT1R	01011000	W	00000000
Input Capture Source 1 Register	ICS1R	01011001	W	xxxxxxxx
Input Capture LSB 1 Register	ICL1R	01011010	R	xxxxxxxx
Input Capture MSB 1 Register	ICM1R	01011011	R	xxxxxxxx
Input Capture Trigger 2 Register	ICT2R	01011100	W	00000000
Input Capture Source 2 Register	ICS2R	01011101	W	xxxxxxxx
Input Capture LSB 2 Register	ICL2R	01011110	R	xxxxxxxx
Input Capture MSB 2 Register	ICM2R	01011111	R	xxxxxxxx
I/O Bank 0 Control Register	IB0CR	10000000	W	000000xx
I/O Bank 1 Control Register	IB1CR	10000001	W	000000xx
I/O Bank 2 Control Register	IB2CR	10000010	W	000000xx
I/O Bank 3 Control Register	IB3CR	10000011	W	000000xx
I/O Bank 4 Control Register	IB4CR	10000100	W	000000xx
I/O Bank 5 Control Register	IB5CR	10000101	W	000000xx
I/O Bank 6 Control Register	IB6CR	10000110	W	000000xx
I/O Bank 7 Control Register	IB7CR	10000111	W	000000xx
PWM LSB 0 Register	PWL0R	10001000	W	xxxxxxxx
PWM MSB 0 Register	PWM0R	10001001	W	xxxxxxxx
PWM LSB 1 Register	PWL1R	10001010	W	xxxxxxxx
PWM MSB 1 Register	PWM1R	10001011	W	xxxxxxxx
PWM LSB 2 Register	PWL2R	10001100	W	xxxxxxxx
PWM MSB 2 Register	PWM2R	10001101	W	xxxxxxxx
PWM LSB 3 Register	PWL3R	10001110	W	xxxxxxxx
PWM MSB 3 Register	PWM3R	10001111	W	xxxxxxxx
Quad Decode Ctrl/Status Register	QDCSR	10010000	R/W	xxxxxxxx
Quad Decode Control Register	QDCR	10010001	W	00xx0000
Quad Decode Count 1 Register	QDC1R	10010100	R	xxxxxxxx
Quad Decode Count 2 Register	QDC2R	10010110	R	xxxxxxxx
Timer A Control/Status Register	TACSR	10100000	R/W	00000000
Timer A Prescale Register	TAPR	10100001	W	xxxxxxx1
Timer A Time Constant 1 Register	TAT1R	10100011	W	xxxxxxxx
Timer A Control Register	TACR	10100100	W	00000000
Timer A Time Constant 2 Register	TAT2R	10100101	W	xxxxxxxx
Timer A Time Constant 8 Register	TAT8R	10100110	W	xxxxxxxx
Timer A Time Constant 3 Register	TAT3R	10100111	W	xxxxxxxx
Timer A Time Constant 9 Register	TAT9R	10101000	W	xxxxxxxx
Timer A Time Constant 4 Register	TAT4R	10101001	W	xxxxxxxx
Timer A Time Constant 10 Register	TAT10R	10101010	W	xxxxxxxx
Timer A Time Constant 5 Register	TAT5R	10101011	W	xxxxxxxx
Timer A Time Constant 6 Register	TAT6R	10101101	W	xxxxxxxx
Timer A Time Constant 7 Register	TAT7R	10101111	W	xxxxxxxx
Timer B Control/Status Register	TBCSR	10110000	R/W	xxxxx000
Timer B Control Register	TBCR	10110001	W	xxxx0000
Timer B MSB 1 Register	TBM1R	10110010	W	xxxxxxxx
Timer B LSB 1 Register	TBL1R	10110011	W	xxxxxxxx
Timer B MSB 2 Register	TBM2R	10110100	W	xxxxxxxx
Timer B LSB 2 Register	TBL2R	10110101	W	xxxxxxxx
Timer B Count MSB Register	TBCMR	10111110	R	xxxxxxxx
Timer B Count LSB Register	TBCLR	10111111	R	xxxxxxxx
Serial Port A Data Register	SADR	11000000	R/W	xxxxxxxx
Serial Port A Address Register	SAAR	11000001	W	xxxxxxxx
Serial Port A Long Stop Register	SALR	11000010	W	xxxxxxxx
Serial Port A Status Register	SASR	11000011	R	0xx00000
Serial Port A Control Register	SACR	11000100	W	xx000000
Serial Port A Extended Register	SAER	11000101	W	00000000
Serial Port B Data Register	SBDR	11010000	R/W	xxxxxxxx
Serial Port B Address Register	SBAR	11010001	W	xxxxxxxx
Serial Port B Long Stop Register	SBLR	11010010	W	xxxxxxxx
Serial Port B Status Register	SBSR	11010011	R	0xx00000
Serial Port B Control Register	SBCR	11010100	W	xx000000
Serial Port B Extended Register	SBER	11010101	W	00000000
Serial Port C Data Register	SCDR	11100000	R/W	xxxxxxxx
Serial Port C Address Register	SCAR	11100001	W	xxxxxxxx
Serial Port C Long Stop Register	SCLR	11100010	W	xxxxxxxx
Serial Port C Status Register	SCSR	11100011	R	0xx00000
Serial Port C Control Register	SCCR	11100100	W	xx000000
Serial Port C Extended Register	SCER	11100101	W	00000000
Serial Port D Data Register	SDDR	11110000	R/W	xxxxxxxx
Serial Port D Address Register	SDAR	11110001	W	xxxxxxxx
Serial Port D Long Stop Register	SDLR	11110010	W	xxxxxxxx
Serial Port D Status Register	SDSR	11110011	R	0xx00000
Serial Port D Control Register	SDCR	11110100	W	xx000000
Serial Port D Extended Register	SDER	11110101	W	00000000
Serial Port E Data Register	SEDR	11001000	R/W	xxxxxxxx
Serial Port E Address Register	SEAR	11001001	W	xxxxxxxx
Serial Port E Long Stop Register	SELR	11001010	W	xxxxxxxx
Serial Port E Status Register	SESR	11001011	R	0xx00000
Serial Port E Control Register	SECR	11001100	W	xx000000
Serial Port E Extended Register	SEER	11001101	W	000x000x
Serial Port F Data Register	SFDR	11011000	R/W	xxxxxxxx
Serial Port F Address Register	SFAR	11011001	W	xxxxxxxx
Serial Port F Long Stop Register	SFLR	11011010	W	xxxxxxxx
Serial Port F Status Register	SFSR	11011011	R	0xx00000
Serial Port F Control Register	SFCR	11011100	W	xx000000
Serial Port F Extended Register	SFER	11011101	W	000x000x