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参数资料
型号： MC8640DTHX1000HE
厂商： Freescale Semiconductor
文件页数： 70/130页
文件大小： 0K
描述： IC DUAL CORE PROCESSOR 1023-CBGA
标准包装： 1
系列： MPC86xx
处理器类型： 32-位 MPC86xx PowerPC
速度： 1.0GHz
电压： 1.05V
安装类型： 表面贴装
封装/外壳： 1023-BCBGA，FCCBGA
供应商设备封装： 1023-FCCBGA（33x33）
包装： 托盘
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
44
Freescale Semiconductor
Local Bus
Figure 25 provides the AC test load for the local bus.
Figure 25. Local Bus AC Test Load
Output hold from local bus clock (except LAD/LDP and LALE)
tLBKHOX1
0.7
—
ns
—
Output hold from local bus clock for LAD/LDP
tLBKHOX2
0.7
—
ns
3
Local bus clock to output high Impedance (except LAD/LDP and LALE)
tLBKHOZ1
—2.5
ns
5
Local bus clock to output high impedance for LAD/LDP
tLBKHOZ2
—2.5
ns
5
Note:
1. The symbols used for timing specifications herein follow the pattern of t(First two letters of functional block)(signal)(state) (reference)(state)
for inputs and t(First two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tLBIXKH1 symbolizes local bus
timing (LB) for the input (I) to go invalid (X) with respect to the time the tLBK clock reference (K) goes high (H), in this case for
clock one(1). Also, tLBKHOX symbolizes local bus timing (LB) for the tLBK clock reference (K) to go high (H), with respect to the
output (O) going invalid (X) or output hold time.
2. All timings are in reference to LSYNC_IN for PLL enabled and internal local bus clock for PLL bypass mode.
3. All signals are measured from OVDD ÷ 2 of the rising edge of LSYNC_IN for PLL enabled or internal local bus clock for PLL
bypass mode to 0.4
× OVDD of the signal in question for 3.3-V signaling levels.
4. Input timings are measured at the pin.
5. For purposes of active/float timing measurements, the Hi-Z or off state is defined to be when the total current delivered
through the component pin is less than or equal to the leakage current specification.
6. tLBOTOT is a measurement of the minimum time between the negation of LALE and any change in LAD. tLBOTOT is
programmed with the LBCR[AHD] parameter.
7. Maximum possible clock skew between a clock LCLK[m] and a relative clock LCLK[
n]. Skew measured between
complementary signals at BVDD ÷ 2.
8. Guaranteed by design.
Table 41. Local Bus Timing Specifications (OVDD = 3.3 V)—PLL Enabled (continued)
Parameter
Symbol 1
Min
Max
Unit
Notes
Output
Z0 = 50 Ω
OVDD/2
RL = 50 Ω
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