mpc8349ea Freescale Semiconductor, Inc, mpc8349ea Datasheet - Page 67

• Manufacturer Part Number: mpc8349ea
• Description: Mpc8349ea Powerquicc
• Manufacturer: Freescale Semiconductor, Inc

Table 56
conditions (see
1
2
3
4
19.1
The system PLL is controlled by the RCWL[SPMF] parameter.
encodings for the system PLL.
Freescale Semiconductor
e300 core frequency ( core_clk )
Coherent system bus frequency ( csb_clk )
DDR1 memory bus frequency (MCK)
DDR2 memory bus frequency (MCK)
Local bus frequency (LCLK n )
PCI input frequency (CLKIN or PCI_CLK)
Security core maximum internal operating frequency
USB_DR, USB_MPH maximum internal operating
frequency
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.
The DDR data rate is 2x the DDR memory bus frequency.
The DDR data rate is 2x the DDR memory bus frequency.
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]).
provides the operating frequencies for the MPC8349EA TBGA under recommended operating
MPC8349EA PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications, Rev. 10
System PLL Configuration
Table
Characteristic
2).
4
1
Table 57. System PLL Multiplication Factors
2
3
Table 56. Operating Frequencies for TBGA
RCWL[SPMF]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
266–400
100–266
100–133
100–133
16.67–133
25–66
133
133
400 MHz
System PLL Multiplication
Reserved
Factor
× 16
× 2
× 3
× 4
× 5
× 6
× 7
× 8
× 9
266–533
100–333
100–133
100–133
16.67–133
25–66
133
133
Table 57
533 MHz
shows the multiplication factor
266–667
100–333
100–166.67
100–200
16.67–133
25–66
166
166
667 MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Clocking
Unit
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