Clocking
Table 72. CSB Frequency Options for Host Mode (continued)
Input Clock Frequency (MHz)
2
CFG_CLKIN_DIV
at Reset
1
SPMF
csb_clk
:
Input Clock
Ratio
2
25
csb_clk
33.33
Frequency (MHz)
—
66.67
—
High
High
High
High
High
High
High
High
High
High
1
2
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
6:1
7:1
8:1
9:1
10 : 1
11 : 1
12 : 1
13 : 1
14 : 1
15 : 1
CFG_CLKIN_DIV select the ratio between CLKIN and PCI_SYNC_OUT.
CLKIN is the input clock in host mode; PCI_CLK is the input clock in agent mode.
Table 73. CSB Frequency Options for Agent Mode
Input Clock
Frequency (MHz)
2
25
csb_clk
Low
Low
Low
Low
0010
0011
0100
0101
2:1
3:1
4:1
5:1
—
125
100
133
—
33.33
Frequency (MHz)
66.67
—
133
—
—
—
CFG_CLKIN_DIV
at reset
1
SPMF
csb_clk
:
Input Clock
Ratio
2
MPC8378E PowerQUICC
™
II Pro Processor Hardware Specifications, Rev. 2
110
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
