HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 269

• 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: -

6.3.6
Use software to ensure coherency between the cache and the external memory. When memory
shared by this LSI and another device is placed in an address space to which caching applies, use
the memory-mapped cache to make the data invalid and written back, as required. Memory that is
shared by this LSI’s CPU and DMAC should also be handled in this way.
Coherency of Cache and External Memory
PA (31 to 4):
Longword 0 to 3:
PA (31 to 4)
Figure 6.3 Write-Back Buffer Configuration
Longword 0 Longword 1 Longword 2 Longword 3
Physical address written to external memory
One line of cache data to be written to external
memory
Rev. 1.00 Dec. 27, 2005 Page 225 of 932
REJ09B0269-0100
Section 6 Cache