參數(shù)資料
型號： MPC8545EVTANG
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 800 MHz, MICROPROCESSOR, PBGA783
封裝： 29 X 29 MM, 1 MM PITCH, FLIP CHIP, LEAD FREE, PLASTIC, BGA-783
文件頁數(shù)： 98/142頁
文件大小： 1504K
代理商： MPC8545EVTANG
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
59
PCI/PCI-X
Table 50 provides the PCI-X AC timing specifications at 133 MHz.
Note that the maximum PCI-X frequency in synchronous mode is 110 MHz.
HRESET to PCI-X initialization pattern hold time
tPCRHIX
050
ns
6, 11
Notes:
1. See the timing measurement conditions in the
PCI-X 1.0a Specification.
2. Minimum times are measured at the package pin (not the test point). Maximum times are measured with the test point and
load circuit.
3. Setup time for point-to-point signals applies to REQ and GNT only. All other signals are bused.
4. 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.
5. Setup time applies only when the device is not driving the pin. Devices cannot drive and receive signals at the same time.
6. Maximum value is also limited by delay to the first transaction (time for HRESET high to first configuration access, tPCRHFV).
The PCI-X initialization pattern control signals after the rising edge of HRESET must be negated no later than two clocks
before the first FRAME and must be floated no later than one clock before FRAME is asserted.
7. A PCI-X device is permitted to have the minimum values shown for tPCKHOV and tCYC only in PCI-X mode. In conventional
mode, the device must meet the requirements specified in PCI 2.2 for the appropriate clock frequency.
8. Device must meet this specification independent of how many outputs switch simultaneously.
9. The timing parameter tPCRHFV is a minimum of 10 clocks rather than the minimum of 5 clocks in the PCI-X 1.0a Specification.
10.Guaranteed by characterization.
11.Guaranteed by design.
Table 50. PCI-X AC Timing Specifications at 133 MHz
Parameter
Symbol
Min
Max
Unit
Notes
SYSCLK to signal valid delay
tPCKHOV
—
3.8
ns
1, 2, 3, 7, 8
Output hold from SYSCLK
tPCKHOX
0.7
—
ns
1, 11
SYSCLK to output high impedance
tPCKHOZ
—
7
ns
1, 4, 8, 12
Input setup time to SYSCLK
tPCIVKH
1.2
—
ns
3, 5, 9, 11
Input hold time from SYSCLK
tPCIXKH
0.5
—
ns
11
REQ64 to HRESET setup time
tPCRVRH
10
—
clocks
12
HRESET to REQ64 hold time
tPCRHRX
050
ns
12
HRESET high to first FRAME assertion
tPCRHFV
10
—
clocks
10, 12
PCI-X initialization pattern to HRESET setup time
tPCIVRH
10
—
clocks
12
Table 49. PCI-X AC Timing Specifications at 66 MHz (continued)
Parameter
Symbol
Min
Max
Unit
Notes
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