D6417729RHF200BV Renesas Electronics America, D6417729RHF200BV Datasheet - Page 72

• Manufacturer Part Number: D6417729RHF200BV
• Description: IC SUPER H MPU ROMLESS 208QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of D6417729RHF200BV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 96
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.85 V ~ 2.15 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-QFP Exposed Pad, 208-eQFP, 208-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

On the other hand, registers R2–R9 are also used for DSP data address calculation when DSP
extension is enabled (see figure 2.4). Other symbols that represent the purpose of the registers in
DSP type instructions is shown in [ ].
DSP type instructions can access X and Y data memory simultaneously. To specify addresses for
X and Y data memory, two address pointer sets are provided. These are:
R8[Ix], R4,5[Ax] for X memory access, and R9[Iy], R6,7[Ay] for Y memory access.
The symbols R2–R9 are used by the assembler, but users can use the register name (alias) to
indicate the purpose of the register in the DSP instruction. The coding in assembler is as follows.
Rev. 5.0, 09/03, page 24 of 806
Ix: .REG (R8)
31
R0
R1
R2 [As]
R3 [As]
R4 [As, Ax]
R5 [As, Ax]
R6 [Ay]
R7 [Ay]
R8 [Ix, Is]
R9 [Iy]
R10
R11
R12
R13
R14
R15
Figure 2.4 General Purpose Registers (DSP Mode)
0
General Registers (DSP mode enabled)
X or Y data transfer operation
Single data transfer operation
R4, 5 [Ax]: Address register set for X data memory.
R8 [x]:
R6, 7 [Ay]: Address register set for Y data memory.
R9 [Iy]:
R2−5 [As]: Address register set for memory.
R8 [Is]:
Index register for address register set Ax.
Index register for address register set Ay.
Index register for address register set As.