MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4
94
Freescale Semiconductor
Clocking
The RCWL[CEVCOD] denotes the QUICC Engine Block PLL VCO internal frequency as shown in
Table 75
.
NOTE
The VCO divider (RCWL[CEVCOD]) must be set properly so that the
QUICC Engine block VCO frequency is in the range of 600–1400 MHz.
The QUICC Engine block frequency is not restricted by the CSB and core
frequencies. The CSB, core, and QUICC Engine block frequencies should
be selected according to the performance requirements.
The QUICC Engine block VCO frequency is derived from the following equations:
ce_clk = (primary clock input × CEPMF)
÷
(1 + CEPDF)
QE VCO Frequency = ce_clk × VCO divider × (1 + CEPDF)
01011
1
× 5.5
01101
1
× 6.5
01111
1
× 7.5
10001
1
× 8.5
10011
1
× 9.5
10101
1
× 10.5
10111
1
× 11.5
11001
1
× 12.5
11011
1
× 13.5
11101
1
× 14.5
Note:
1. Reserved modes are not listed.
Table 75. QUICC Engine Block PLL VCO Divider
RCWL[CEVCOD]
VCO Divider
00
4
01
8
10
2
11
Reserved
Table 74. QUICC Engine Block PLL Multiplication Factors (continued)
RCWL[CEPMF] RCWL[CEPDF]
QUICC Engine PLL
Multiplication Factor = RCWL[CEPMF]/
(1 + RCWL[CEPDF])