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参数资料
| 型号： | MPC8323ECVRADDCA |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA516 |
| 封装： | 27 X 27 MM, 2.25 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, PBGA-516 |
| 文件页数： | 20/82页 |
| 文件大小： | 1134K |
| 代理商： | MPC8323ECVRADDCA |
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MPC8323E PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 4
Freescale Semiconductor
27
Local Bus
Figure 14 provides the AC test load for the local bus.
Figure 14. Local Bus C Test Load
LALE output fall to LAD output transition (LATCH hold time)
tLBOTOT2
3—
ns
6
LALE output fall to LAD output transition (LATCH hold time)
tLBOTOT3
2.5
—
ns
7
Local bus clock (LCLK
n) to output valid
tLBKHOV
—3
ns
3
Local bus clock (LCLK
n) to output high impedance for LAD/LDP
tLBKHOZ
—4
ns
8
Local bus clock (LCLK
n) duty cycle
tLBDC
47
53
%
—
Local bus clock (LCLK
n) jitter specification
tLBRJ
—
400
ps
—
Delay between the input clock (PCI_SYNC_IN) of local bus
output clock (LCLK
n)
tLBCDL
—1.7
ns
—
Notes:
1. The symbols used for timing specifications 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).
2. All timings are in reference to falling edge of LCLK0 (for all outputs and for LGTA and LUPWAIT inputs) or rising edge of
LCLK0 (for all other inputs).
3. All signals are measured from OVDD/2 of the rising/falling edge of LCLK0 to 0.4 × OVDD of the signal in question for 3.3-V
signaling levels.
4. Input timings are measured at the pin.
5. tLBOTOT1 should be used when RCWH[LALE] is not set and the load on LALE output pin is at least 10 pF less than the load
on LAD output pins.
6. tLBOTOT2 should be used when RCWH[LALE] is set and the load on LALE output pin is at least 10 pF less than the load on
LAD output pins.
7. tLBOTOT3 should be used when RCWH[LALE] is set and the load on LALE output pin equals to the load on LAD output pins.
8. 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.
Table 30. Local Bus General Timing Parameters (continued)
Parameter
Symbol1
Min
Max
Unit
Notes
Output
Z0 = 50 Ω
OVDD/2
RL = 50 Ω
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