HD6417727F100C Renesas Electronics America, HD6417727F100C Datasheet - Page 209

• Manufacturer Part Number: HD6417727F100C
• Description: IC SUPERH MPU ROMLESS 240QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100C

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

cache will not function correctly. When modifying the LRU bits by software, set one of the
patterns listed in table 5.2.
The LRU bits are initialized to 0 by a power-on reset, but are not initialized by a manual reset.
Table 5.2
LRU (5–0)
000000, 000100, 010100, 100000, 110000, 110100
000001, 000011, 001011, 100001, 101001, 101011
000110, 000111, 001111, 010110, 011110, 011111
111000, 111001, 111011, 111100, 111110, 111111
5.1.3
Table 5.3 shows details of the cache control register.
Table 5.3
Register
Cache control register
Cache control register 2
Note: * When address translation by the MMU does not apply, the address in parentheses should
5.2
5.2.1
The cache is enabled or disabled using the CE bit of the cache control register (CCR). CCR also
has a CF bit (which invalidates all cache entries), and a WT and CB bits (which select either write-
through mode or write-back mode). Programs that change the contents of the CCR register should
be placed in address space that is not cached. Figure 5.2 shows the configuration of the CCR
register.
be used.
Register Configuration
Register Description
Cache Control Register (CCR)
LRU and Way Replacement
Register Configuration
Abbr.
CCR
CCR2
R/W
R/W
W
Size
Longword
Longword
Rev.6.00 Mar. 27, 2009 Page 151 of 1036
Way to be Replaced
3
2
1
0
Initial Value
H'00000000
H’00000000
REJ09B0254-0600
Section 5 Cache
Address
H'FFFFFFEC
H'040000B0
(H'A40000B0)*