参数资料
型号: MPC8349CVVAGDA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672
封装: 35 X 35 MM, 1.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, TBGA-672
文件页数: 28/112页
文件大小: 1295K
代理商: MPC8349CVVAGDA
MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 2
22
Freescale Semiconductor
RESET Initialization
Table 10 lists the PLL and DLL lock times.
Input hold time for POR configuration signals with respect to
negation of HRESET
0—
ns
Time for the MPC8349EA to turn off POR configuration signals
with respect to the assertion of HRESET
—4
ns
3
Time for the MPC8349EA to turn on POR configuration signals
with respect to the negation of HRESET
1—
tPCI_SYNC_IN
1, 3
Notes:
1. tPCI_SYNC_IN is the clock period of the input clock applied to PCI_SYNC_IN. In PCI host mode, the primary clock is applied
to the CLKIN input, and PCI_SYNC_IN period depends on the value of CFG_CLKIN_DIV. See the MPC8349EA Integrated
Host Processor Reference Manual.
2. tCLKIN is the clock period of the input clock applied to CLKIN. It is valid only in PCI host mode. See the MPC8349EA
Integrated Host Processor Reference Manual.
3. POR configuration signals consist of CFG_RESET_SOURCE[0:2] and CFG_CLKIN_DIV.
Table 10. PLL and DLL Lock Times
Parameter/Condition
Min
Max
Unit
Notes
PLL lock times
100
μs
DLL lock times
7680
122,880
csb_clk cycles
1, 2
Notes:
1. DLL lock times are a function of the ratio between the output clock and the coherency system bus clock (csb_clk). A 2:1 ratio
results in the minimum and an 8:1 ratio results in the maximum.
2. The csb_clk is determined by the CLKIN and system PLL ratio. See Section 19, “Clocking.”
Table 9. RESET Initialization Timing Specifications (continued)
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