HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 21

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

Table 1.1
Item
DSP
Features (cont)
Specifications
DSP engine
Multiplier
DSP registers
DSP data bus
Parallel processing
Address processors
DSP data addressing modes
Repeat control: Zero-overhead repeat (loop) control
Instruction set
Fifth and last pipeline stage is DSP stage
Multiplier
Arithmetic logic unit (ALU)
Shifter
DSP registers
16 bits
Single-cycle multiplier
Two 40-bit data registers
Six 32-bit data registers
Modulo register (MOD, 32 bits) added to control registers
Repeat counter (RC) added to status register (SR)
Repeat start register (RS, 32 bits) and repeat end register (RE, 32 bits)
Extended Harvard architecture
Simultaneous access to two data buses and one instruction bus
Maximum of four parallel processes
ALU operations, multiplication, and two loads or stores
Two address processors
Address operations to access two memories
Increment and index
Each with or without modulo addressing
16-bit length (in case of load or store only)
32-bit length (including ALU operations and multiplication)
Added SuperH microcontroller instructions for accessing DSP registers
added to control registers
16 bits
32 bits
3