參數(shù)資料
型號: MPC8572VTATLB
廠商: Freescale Semiconductor
文件頁數(shù): 92/138頁
文件大小: 0K
描述: MPU POWERQUICC III 1023-PBGA
標準包裝: 1
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.2GHz
電壓: 1.1V
安裝類型: 表面貼裝
封裝/外殼: 1023-BBGA,F(xiàn)CBGA
供應商設(shè)備封裝: 1023-FCPBGA(33x33)
包裝: 托盤
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
57
Local Bus Controller (eLBC)
Figure 29 provides the AC test load for the local bus.
Figure 29. Local Bus AC Test Load
Local bus clock to output valid (except LAD/LDP and
LALE)
tLBKHOV1
—3.2
ns
Local bus clock to data valid for LAD/LDP
tLBKHOV2
—3.2
ns
3
Local bus clock to address valid for LAD
tLBKHOV3
—3.2
ns
3
Local bus clock to LALE assertion
tLBKHOV4
—3.2
ns
3
Output hold from local bus clock (except LAD/LDP and
LALE)
tLBKHOX1
0.9
ns
3
Output hold from local bus clock for LAD/LDP
tLBKHOX2
0.9
ns
3
Local bus clock to output high Impedance (except
LAD/LDP and LALE)
tLBKHOZ1
—2.6
ns
5
Local bus clock to output high impedance for LAD/LDP
tLBKHOZ2
—2.6
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 BVDD/2 of the rising edge of LSYNC_IN for PLL enabled or internal local bus
clock for PLL bypass mode to 0.4
× BVDD of the signal in question for 1.8-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 51. Local Bus General Timing Parameters (BVDD = 1.8 V DC)—PLL Enabled (continued)
At recommended operating conditions with BVDD of 1.8 V ± 5% (continued)
Parameter
Symbol 1
Min
Max
Unit
Notes
Output
Z0 = 50 Ω
BVDD/2
RL = 50 Ω
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