参数资料
型号: MPC8536AVTANGA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 800 MHz, MICROPROCESSOR, PBGA783
封装: 29 X 29 MM, 2.80 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, FCBGA-783
文件页数: 53/127页
文件大小: 1893K
代理商: MPC8536AVTANGA
RESET Initialization
MPC8536E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
31
2.4.6
Platform to FIFO Restrictions
Please note the following FIFO maximum speed restrictions based on platform speed. The “platform clock (CCB) frequency”
in the following formula refers to the maximum platform (CCB) frequency of the speed bins the part belongs to, which is
defined in Table 73.
For FIFO GMII mode:
FIFO TX/RX clock frequency <= platform clock frequency/3.2
For example, if the platform frequency is 533 MHz, the FIFO TX/RX clock frequency should be no more than 167 MHz
For FIFO encoded mode:
FIFO TX/RX clock frequency <= platform clock frequency/3.2
For example, if the platform frequency is 533 MHz, the FIFO TX/RX clock frequency should be no more than
167 MHz
2.4.7
Other Input Clocks
For information on the input clocks of other functional blocks of the platform such as SerDes, and eTSEC, see the specific
section of this document.
2.5
RESET Initialization
This section describes the AC electrical specifications for the RESET initialization timing requirements of the MPC8536E.
Table 10 provides the RESET initialization AC timing specifications for the DDR SDRAM component(s).
Table 11 provides the PLL lock times.
Table 10. RESET Initialization Timing Specifications
Parameter/Condition
Min
Max
Unit
Notes
Required assertion time of HREST
100
μs—
Minimum assertion time for SRESET
3—
Sysclk
1
PLL input setup time with stable SYSCLK before HRESET negation
100
μs—
Input setup time for POR configurations (other than PLL config) with respect to negation of
HRESET
4
SYSCLKs
1
Input hold time for all POR configurations (including PLL config) with respect to negation of
HRESET
2
SYSCLKs
1
Maximum valid-to-high impedance time for actively driven POR configurations with respect to
negation of HRESET
5
SYSCLKs
1
HRESET rise time
1
SYSCLK
Notes:
1. SYSCLK is the primary clock input for the MPC8536E.
Table 11. PLL Lock Times
Parameter/Condition
Min
Max
Unit
Notes
PLL lock times
100
μs—
Local bus PLL
50
μs—
PCI bus lock time
50
μs—
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