Freescale Semiconductor MPC5200B User Manual
Page 137
MPC5200B Users Guide, Rev. 1
5-4
Freescale Semiconductor
MPC5200B Clock Domains
shows the System PLL configuration and the corresponding fsystem frequencies for a 27.0 MHz and 33.0 MHz input clock.
shows all possible clock ratios.
Table 5-2. System PLL Ratios
SYS_XTAL_IN
sys_pll_cfg[1]
sys_pll_cfg[0]
f
VCOsys
[MHz]
f
system
[MHz]
27.0
0
0
432.0
432.0
0
1
324.0
324.0
1
a
a
These are invalid configurations. The f
VCOsys
frequencies exceed the maximum operation frequency. See
MPC5200B Hardware Specification.
0
864.0
432.0
1
1
648.0
324.0
33.0
0
0
528.0
528.0
0
1
396.0
396.0
1
a
0
1056.0
528.0
1
1
792.0
396.0
Table 5-3. MPC5200B
Clock Ratios
xlb_clk_sel
XLB CLOCK
ipb_clk_sel
IPB CLOCK
pci_clk_sel[1:0]
PCI CLOCK
CLOCK Ratio
XLB:IPB:PCI
0
f
system
/ 4
0
XLB
00
XLB
4:4:4
0
f
system
/ 4
0
XLB
01
XLB/2
4:4:2
0
f
system
/ 4
0
XLB
10
XLB/4
4:4:1
0
f
system
/ 4
0
XLB
11
XLB/4
4:4:1
0
f
system
/ 4
1
XLB /2
00
XLB/2
4:2:2
0
f
system
/ 4
1
XLB /2
01
XLB/4
4:2:1
0
f
system
/ 4
1
XLB /2
10
XLB/4
4:2:1
0
f
system
/ 4
1
XLB /2
11
XLB/4
4:2:1
1
f
system
/ 8
0
XLB
00
XLB
2:2:2
1
f
system
/ 8
0
XLB
01
XLB/2
2:2:1
1
f
system
/ 8
0
XLB
10
XLB/4
2:2:0.5
1
f
system
/ 8
0
XLB
11
XLB/4
2:2:0.5
1
f
system
/ 8
1
XLB /2
00
XLB/2
2:1:1
1
f
system
/ 8
1
XLB /2
01
XLB/4
2:1:0.5
1
f
system
/ 8
1
XLB /2
10
XLB/4
2:1:0.5
1
f
system
/ 8
1
XLB /2
11
XLB/4
2:1:0.5