Electronic Component Distributor. Source::Freescale Semiconductor
P.N:MPC8349CZUAGDB Desc:IC MPU POWERQUICC II PRO 672TBGA
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MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13
68
Freescale Semiconductor
Clocking
Table 57
provides the operating frequencies for the MPC8349EA TBGA under recommended operating
conditions (see
Table 2
).
All frequency combinations shown in the table below may not be available. Maximum operating
frequencies depend on the part ordered, see
Section 22.1, “Part Numbers Fully Addressed by This
Document,”
for part ordering details and contact your Freescale Sales Representative or authorized
distributor for more information.
19.1
System PLL Configuration
The system PLL is controlled by the RCWL[SPMF] parameter.
Table 58
shows the multiplication factor
encodings for the system PLL.
Table 57. Operating Frequencies for TBGA
Characteristic
1
1
The CLKIN frequency, RCWL[SPMF], and RCWL[COREPLL] settings must be chosen so that the resulting
csb_clk
, MCK,
LCLK[0:2], and
core_clk
frequencies do not exceed their respective maximum or minimum operating frequencies. The value of
SCCR[ENCCM], SCCR[USBDRCM] and SCCR[USBMPHCM] must be programmed so that the maximum internal operating
frequency of the security core and USB modules does not exceed the respective values listed in this table.
400 MHz
533 MHz
667 MHz
Unit
e300 core frequency (
core_clk
)
266–400
266–533
266–667
MHz
Coherent system bus frequency (
csb_clk
)
100–266
100–333
100–333
MHz
DDR1 memory bus frequency (MCK)
2
2
The DDR data rate is 2x the DDR memory bus frequency.
100–133
100–133
100–166.67
MHz
DDR2 memory bus frequency (MCK)
3
3
The DDR data rate is 2x the DDR memory bus frequency.
100–133
100–133
100–200
MHz
Local bus frequency (LCLK
n
)
4
4
The local bus frequency is 1/2, 1/4, or 1/8 of the
lbiu_clk
frequency (depending on LCCR[CLKDIV]) which is in turn 1x or 2x the
csb_clk
frequency (depending on RCWL[LBIUCM]).
16.67–133
16.67–133
16.67–133
MHz
PCI input frequency (CLKIN or PCI_CLK)
25–66
25–66
25–66
MHz
Security core maximum internal operating frequency
133
133
166
MHz
USB_DR, USB_MPH maximum internal operating frequency
133
133
166
MHz
Table 58. System PLL Multiplication Factors
RCWL[SPMF]
System PLL Multiplication Factor
0000
× 16
0001
Reserved
0010
× 2
0011
× 3
0100
× 4
0101
× 5
0110
× 6
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