HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 66

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

2.3
The CPU core instructions are RISC type. The characteristics are as follows.
16-Bit Fixed Length: All instructions are 16 bits long, increasing program code efficiency.
One Instruction per Cycle: The microprocessor can execute basic instructions in one cycle using
the pipeline system. One state equals 16.7 ns when operating at 60 MHz.
Data Length: Longword is the basic data length for all operations. Memory can be accessed in
bytes, words, or longwords. Byte or word data accessed from memory is sign-extended and
handled as longword data. Immediate data is sign-extended for arithmetic operations or zero-
extended for logic operations. It also is handled as longword data.
48
MOVS.W,
MOVS.L
8 bits
39
7
CPU Core Instruction Features
A0G
A1G
DSR
Figure 2.8 DSP Register-Bus Relationship during Data Transfers
[7:0]
32
0
MOVX.W,
MOVY.W
16 bits
32 bits
16 bits
16 bits
31
A0
A1
M0
M1
X0
X1
Y0
Y1
16
32 bits
0
MOVS.W,
MOVS.L
CDB
XDB
YDB