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14
CHAPTER 3 REGISTER DESCRIPTIONS
3.1 FR Family Register Configuration
FR family devices use two types of registers, general-purpose registers and dedicated
registers.
• General-purpose registers: Store computation data and address information
• Dedicated registers: Store information for specific applications
Figure 3.1-1 shows the configuration of registers in FR family devices.
■ FR Family Register Configuration
Figure 3.1-1 FR Family Register Configuration
64 bits
32 bits
Initial value
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
General-purpose registers
Dedicated registers
MD
R0
R1
R2
R3
R12
R13
R14
R15
PC
PS
TBR
RP
SSP
USP
Accumulator(AC)
Frame pointer(FP)
SSP or USP
--
ILM SCR CCR
00000000
H
00000000H
000FFC00H
Reset entry address
ILM=01111
B
SCR=XX0B
CCR=XX00XXXXB