參數(shù)資料
型號： KXPC8240RVV250E
廠商： Freescale Semiconductor
文件頁數(shù)： 10/52頁
文件大?。?/td> 0K
描述： IC MPU INTEGRATED 250MHZ 352TBGA
標(biāo)準包裝： 2
系列： MPC82xx
處理器類型： 32-位 MPC82xx PowerQUICC II
速度： 250MHz
電壓： 2.5V
安裝類型： 表面貼裝
封裝/外殼： 352-LBGA
供應(yīng)商設(shè)備封裝： 352-TBGA（35x35）
包裝： 托盤
18
MPC8240 Integrated Processor Hardware Specifications
Electrical and Thermal Characteristics
Table 10 describes the bit values for the PCI_HOLD_DEL values in PMCR2.
Table 10. Power Management Configuration Register 2 at 0x72
Bit
Name
Reset
Value
Description
6–4 PCI_HOLD_DEL
xx0
PCI output hold delay values relative to PCI_SYNC_IN. The initial values of bits 6
and 5 are determined by the reset configuration pins MCP and CKE, respectively.
As these two pins have internal pull-up resistors, the default value after reset is
0b110.
Although the minimum hold times are guaranteed at shown values, changes in the
actual hold time can be made by incrementing or decrementing the value in these
bit fields of this register through software or hardware configuration. The increment
is in approximately 400-picosecond steps. Lowering the value in the 3-bit field
decreases the amount of output hold available.
000 For Silicon Rev. 1.0/1.1: 66-MHz PCI. Pull-down CKE configuration pin with a
2-k
or less value resistor. This setting guarantees the minimum output hold
(item 13a) and the maximum output valid (item 12a) times as specified in
Figure 9 are met for a 66-MHz PCI system. See Figure 12.
001 Reserved
010 Reserved
011 Reserved
100 For Silicon Rev. 1.2/1.3: 66-MHz PCI. Pull-down CKE configuration pin with a
2-k
or less value resistor. This setting guarantees the minimum output hold
(item 13a) and the maximum output valid (item 12a) times as specified in
Figure 9 are met for a 66-MHz PCI system. See Figure 12.
For Silicon Rev. 1.0/1.1: 33-MHz PCI. This setting guarantees the minimum
output hold (item 13a) and the maximum output valid (item 12a) times as
specified in Figure 9 are met for a 33-MHz PCI system. See Figure 12.
101 Reserved
110 For Silicon Rev. 1.2/1.3: 33-MHz PCI. This setting guarantees the minimum
output hold (item 13a) and the maximum output valid (item 12a) times as
specified in Figure 9 are met for a 33-MHz PCI system. See Figure 12.
(Default if reset configuration pins left unconnected.)
For Silicon Rev. 1.0/1.1: Default if reset configuration pins left unconnected.
111
Reserved
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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