IXXBB1 Fujitsu Microelectronics, Inc., IXXBB1 Datasheet - Page 32

• Manufacturer Part Number: IXXBB1
• Description: 32-bit Proprietary Microcontroller Cmos Fr60 Mb91301 Series
• Manufacturer: Fujitsu Microelectronics, Inc.

32
MB91301 Series
2. Registers
Dedicated registers
PC (Program Counter)
Table base register (TBR)
Program counter (PC)
Program status (PS)
Table base register (TBR)
Return pointer (RP)
System stack pointer (SSP)
User stack pointer (USP)
Multiplication and division
result register (MDH/MDL)
The FR series has two types of registers: application-specific registers in the CPU and general purpose registers
in memory.
The PC is the program counter and stores the address of the currently executing instruction.
The TBR is the table base register and stores the top address of the vector table used by the EIT function.
32 bit
MDH
TBR
SSP
USP
MDL
: 32-bit register. Stores the current instruction address.
: 32-bit register. Contains the register pointer and condition code.
: Stores the top address of the vector table used by the EIT (exception/interrupt/
: Stores the subroutine return address.
: Points to the system stack area.
: Points to the user stack area.
: 32-bit registers used for multiplication and division.
PC
PS
RP
PC
TBR
trap) function.
31
31
TBR
PC
Program counter
Program status
Table base register
Return pointer
System stack pointer
User stack pointer
Multiplication and division
result register
0
0
Initial value
XXXX XXXX
000F FC00
XXXX XXXX
0000 0000
XXXX XXXX
XXXX XXXX
XXXX XXXX
H
H
H
H
H
H
H