参数资料
型号: MPC8314ECVRADDA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: MICROPROCESSOR, PBGA620
封装: 29 X 29 MM, LEAD FREE, PLASTIC, TEPBGA-620
文件页数: 13/106页
文件大小: 1253K
代理商: MPC8314ECVRADDA
MPC8314E PowerQUICC II Pro Processor Hardware Specifications, Rev. 0
14
Freescale Semiconductor
Clock Input Timing
5.1
DC Electrical Characteristics
Table 6 provides the clock input (SYS_CLKIN/PCI_SYNC_IN) DC timing specifications for the
MPC8314E.
5.2
AC Electrical Characteristics
The primary clock source for the MPC8314E can be one of two inputs, SYS_CLKIN or PCI_CLK,
depending on whether the device is configured in PCI host or PCI agent mode. Table 7 provides the clock
input (SYS_CLKIN/PCI_CLK) AC timing specifications for the MPC8314E.
Table 6. SYS_CLKIN DC Electrical Characteristics
Parameter
Condition
Symbol
Min
Max
Unit
Input high voltage
VIH
2.4
NVDD + 0.3
V
Input low voltage
VIL
-0.3
0.4
V
SYS_CLKIN input current
0 V
≤VIN ≤ NVDD
IIN
—±10
μA
SYS_CR_CLKIN input current
0 V
≤VIN ≤ NVDD
IIN
—±40
μA
PCI_SYNC_IN input current
0 V
≤VIN ≤ NVDD
IIN
—±10
μA
RTC_CLK input current
0 V
≤VIN ≤ NVDD
IIN
—±10
μA
USB_CLK_IN input current
0 V
≤ VIN ≤ NVDD
IIN
—±10
μA
USB_CR_CLK_IN input current
0 V
≤VIN ≤ NVDD
IIN
—±40
μA
Table 7. SYS_CLKIN AC Timing Specifications
Parameter/Condition
Symbol
Min
Typical
Max
Unit
Notes
SYS_CLKIN/PCI_CLK frequency
fSYS_CLKIN
24
66
MHz
1, 6, 7
SYS_CLKIN/PCI_CLK cycle time
tSYS_CLKIN
15
41.6
ns
6
SYS_CLKIN/PCI_CLK rise and fall time
tKH, tKL
0.6
1.2
ns
2, 6
SYS_CLKIN/PCI_CLK duty cycle
tKHK/tSYS_CLKIN
40
60
%
3, 6
SYS_CLKIN/PCI_CLK jitter
±150
ps
4, 5, 6
Notes:
1. Caution: The system, core, and security block must not exceed their respective maximum or minimum operating frequencies.
2. Rise and fall times for SYS_CLKIN/PCI_CLK are measured at 0.4 and 2.4 V.
3. Timing is guaranteed by design and characterization.
4. This represents the total input jitter—short term and long term—and is guaranteed by design.
5. The SYS_CLKIN/PCI_CLK driver’s closed loop jitter bandwidth should be <500 kHz at –20 dB. The bandwidth must be set
low to allow cascade-connected PLL-based devices to track SYS_CLKIN drivers with the specified jitter.
6. The parameter names PCI_CLK and PCI_SYNC_IN are used interchangeably in this document.
7. Spread spectrum is allowed upto 1% down-spread at 33kHz.(max. rate).
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