HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 171

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

Specifications of HD6417712BPV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, FIFO, SCI, SIO
• Peripherals: DMA, POR, WDT
• Number Of I /o: 24
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Table 3.25 Variation of Fixed-Point Multiply Operation
Table 3.26 Correspondence between Operands and Registers
Note: The multiply operations basically generate 32-bit operation results. So when a register
The multiply operation of the DSP unit side is not integer but fixed-point arithmetic. So, the upper
words of each multiplier and multiplicand are input into a MAC unit as shown in figure 3.16. In
the SH's standard multiply operations, the lower words of both source operands are input into a
MAC unit. The operation result is also different from the SH's case. The SH's multiply operation
Mnemonic
PMULS
Register
A0
A1
M0
M1
X0
X1
Y0
Y1
providing the guard-bit parts are specified as a destination operand, the guard-bit parts will
copy bit 31 of the operation result.
39
Function
Signed multiplication
Se
—
Yes
—
—
Yes
Yes
Yes
—
Figure 3.16 Fixed-Point Multiply Operation Flow
31
S
0
Source 1
39
31
S
MAC
Destination
0
Sf
—
Yes
—
—
Yes
—
Yes
Yes
Source 1
Se
39
1 0
31
0
S
Source 2
Rev. 1.00 Dec. 27, 2005 Page 127 of 1044
Source 2
Sf
Section 3 DSP Operating Unit
Ignored
Dg
Yes
Yes
Yes
Yes
—
—
—
—
0
REJ09B0269-0100
Destination
Dg