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XPC8240RZU250E Datasheet(PDF) 5 Page - Freescale Semiconductor, Inc |
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XPC8240RZU250E Datasheet(HTML) 5 Page - Freescale Semiconductor, Inc |
5 / 8 page MPC8240 Part Number Specification for the XPC8240RXXnnnx Series 5 Ordering Information Notes: 1. The processor HID1 values only represent the multiplier of the processor’s PLL (memory-to-processor multiplier); thus, multiple MPC8240 PLL_CFG[0:4] values may have the same processor HID1 value. This implies that system software cannot read the HID1 register and associate it with a unique PLL_CFG[0:4] value. 2. PLL_CFG[0:4] settings not listed (00110, 01001, 01011, 01101, 01111, 10001, 10011, 10101, 10111, 11001, and 11011) are reserved. 3. In PLL bypass mode, the PCI_SYNC_IN input signal clocks the internal processor directly, the peripheral logic PLL is disabled, and the bus mode is set for 1:1 (PCI:Mem) mode operation. This mode is intended for hardware modeling support. The AC timing specifications given in this document do not apply in PLL bypass mode. 4. In clock-off mode, no clocking occurs inside the MPC8240 regardless of the PCI_SYNC_IN input. 5. Limited due to maximum memory VCO = 225 MHz. 6. Limited due to minimum CPU VCO = 200 MHz. 7. Limited due to minimum memory VCO = 100 MHz. 8. For clarity, range values are shown rounded down to the nearest whole number (decimal place accuracy removed). 9. Note that the 250-MHz part is available only in the XPC8240RZUnnnx number series. 1.9 Ordering Information Ordering information for the parts fully covered by this specification document is provided in Section 1.9.1, “Part Numbers Fully Addressed by This Document.” 5 00101 00110 Bypass Bypass 2.5 (5) 7 00111 11000 Bypass Bypass 3 (6) 8 01000 11000 33 6–56 5 33–56 100–168 1 (4) 3 (6) A 01010 00111 25–27 50–55 225–250 2 (4) 4.5 (9) C 01100 00110 25–50 50–100 125–250 2 (4) 2.5 (5) E 01110 11000 25–41 50–83 150–250 2 (4) 3 (6) 10 10000 00100 25–33 75–100 150–200 3 (6) 2 (4) 12 10010 00100 33–66 50–100 100–200 1.5 (3) 2 (4) 14 10100 11110 25–35 50–71 175–250 2 (4) 3.5 (7) 16 10110 11010 25–31 50–62 200–250 2 (4) 4 (8) 18 11000 11000 25–33 62–83 186–250 2.5 (5) 3 (6) 1A 11010 11010 50 7–62 50–62 200–250 1 (2) 4 (8) 1C 11100 11000 33 7–55 50–83 150–250 1.5 (3) 3 (6) 1D 11101 00110 33 7–66 50–100 125–250 1.5 (3) 2.5 (5) 1E 11110 01111 Not usable Off Off 1F 11111 11111 Off Off Table 18. MPC8240 Microprocessor PLL Configurations (continued) Ref. No. PLL_ CFG [0:4] 2 CPU 1 HID1[0:4] 250-MHz Part 8, 9 Ratios 3, 4 PCI Clock Input (PCI_SYNC_IN) Range (MHz) Peripheral Logic/Mem Bus Clock Range (MHz) CPU Clock Range (MHz) PCI to Mem (Mem VCO) Multiplier Mem to CPU (CPU VCO) Multiplier Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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