HD6417727F160V Renesas Electronics America, HD6417727F160V Datasheet - Page 211

• Manufacturer Part Number: HD6417727F160V
• Description: MPU 3V 16K PB-FREE 240-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F160V

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 160MHz
• 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): 1.7 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: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Whenever CCR2 bit 8 (W3LOCK) or bit 0 (W2LOCK) is high the cache is locked. The locked
data will not be overwritten unless W3LOCK bit and W2LOCK bit are reset or the PREF
condition during DSP mode matched. During cache locking mode, the LRU in table 5.2 will be
replaced by tables 5.4 to 5.6.
Table 5.4
LRU (5–0)
000000, 000001, 000100, 010100, 100000, 100001, 110000, 110100
000011, 000110, 000111, 001011, 001111, 010110, 011110, 011111
101001, 101011, 111000, 111001, 111011, 111100, 111110, 111111
Table 5.5
LRU (5–0)
000000, 000001, 000011, 001011, 100000, 100001, 101001, 101011
000100, 000110, 000111, 001111, 010100, 010110, 011110, 011111
110000, 110100, 111000, 111001, 111011, 111100, 111110, 111111
W2LOCK: Way 2 lock bit. W2LOAD: Way 2 load bit.
When W2LOCK = 1 & W2LOAD = 1 & DSP = 1, the prefetched data will always be loaded
into Way2. In all other conditions the prefetched data will be loaded into the way pointed by
LRU.
W3LOCK: Way 3 lock bit. W3LOAD: Way 3 load bit.
When W3LOCK = 1 & W3LOAD = 1 & DSP = 1, the prefetched data will always be loaded
into Way3. In all other conditions the prefetched data will be loaded into the way pointed by
LRU.
Note: W2LOAD and W3LOAD should not be set to high at the same time.
31
LRU and Way Replacement (when W2LOCK=1)
LRU and Way Replacement (when W3LOCK=1)
Figure 5.3 CCR2 Register Configuration
LOAD
W3
9
Rev.6.00 Mar. 27, 2009 Page 153 of 1036
LOCK
W3
8
7
Way to be Replaced
3
1
0
Way to be Replaced
2
1
0
2
LOAD
W2
REJ09B0254-0600
1
Section 5 Cache
LOCK
W2
0