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WED3C7410E16M-XBX Datasheet(PDF) 8 Page - White Electronic Designs Corporation |
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WED3C7410E16M-XBX Datasheet(HTML) 8 Page - White Electronic Designs Corporation |
8 / 13 page 8 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WED3C7410E16M-XBX May 2006 Rev. 9 L2 CACHE CONTROL REGISTER (L2CR) The L2 cache control register, shown in Figure 5, is a supervisor-level, implementation-specific SPR used to configure and operate the L2 cache. It is cleared by hard reset or power-on reset. BGA THERMAL RESISTANCE Description Symbol PPC SSRAM Units Notes Junction to Ambient (No Airflow) Theta JA 14.0 10.3 C/W 1 Junction to Ball Theta JB 8.9 5.2 C/W 1 Junction to Case (Top) Theta JC 0.1 0.1 C/W 1 NOTE 1: Refer to PBGA Thermal Resistance Correlation at www.whiteedc.com in the application notes section for modeling conditions POWER CONSUMPTION VCC = AVCC = 1.8 ±0.1V VDC, L2VCC = 3.3V ±5% VDC, GND = 0 VDC, 0 ≤ TJ < 105°C Processor (CPU) Frequency/L2 Frequency Unit Notes 400MHz/200MHz 450MHz/200MHz Full-on Mode Typical 5.7 6.2 W 1, 3 Maximum 13.1 14.3 W 1, 2 Doze Mode Maximum 5.3 5.8 W 1, 2 Nap Mode Maximum 2.25 2.4 W 1, 2 Sleep Mode Maximum 2.20 2.35 W 1, 2 Sleep Mode–PLL and DLL Disabled Maximum 2.0 2.0 W 1, 2 NOTES: 1. These values apply for all valid system bus and L2 bus ratios. The values do not include OVCC; AVCC and L2AVCC suppling power. OVCC power is system dependent, but is typically <10% of VCC power. Worst case power consumption, for AVCC = 15mW and L2AVCC = 15mW. 2. Maximum power is measured at VCC = 1.9 V while running an entirely cache-resident, contrived sequence of instructions which keep the execution units maximally busy. 3. Typical power is an average value measured at VCC = AVCC = L2AVCC = 1.8V, OVCCd = L2OVCC = 2.5V in a system, executing typical applications and benchmark sequences. 4. At a maximum 60x bus frequency of 133MHz, the maximum configurtable core frequency is 400MHz. FIGURE 5 – L2 CACHE CONTROL REGISTER (L2CR) The L2CR bits are described in Table 1. L2E L2SIZ L2CLK L2RAM L21 L2OH 0000000 0 1 2 3 4 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 22 24 30 31 L2IP L2PE L2DO L2CTL L2TS L2SL L2BYP L2HWF L2IO L2DRO L2WT L2DF L2FA L2CLKSTP |
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