Revision 1.15 – August 30, 2007
440GX – Power PC 440GX Embedded Processor
Clocking Specifications
Data Sheet
Symbol
Parameter
Minimum
Maximum
Units
Notes
SysClk Input
FC
Frequency
Period
33.33
83.33
30
MHz
ns
TC
12
TCS
TCH
TCL
Edge stability (cycle-to-cycle jitter)
–
±0.15
ns
High time
Low time
40% of nominal period
40% of nominal period
60% of nominal period
60% of nominal period
ns
ns
Note:Input slew rate ≥ 1V/ns
PLL VCO
FC
TC
Frequency
Period
600
1334
1.66
MHz
ns
0.75
Processor Clock (CPU Clock)
FC
TC
Frequency
Period
333
800
3
MHz
ns
1
1.25
MemClkOut
100
100
166.66
200
Frequency—533, 667, 800MHz
Rev C
FC
MHz
Frequency—800MHz Rev F
Period—533, 667, 800MHz Rev C
Period—800MHz Rev F
6
5
10
10
TC
ns
ns
TCH
High time
45% of nominal period
55% of nominal period
OPB Clock
FC
Frequency
Period
33.33
12
83.33
30
MHz
ns
TC
MAL Clock
FC
Frequency
Period
45
12
83.33
22.22
MHz
ns
TC
Notes:
1. The maximum supported processor clock frequency for any part is specified in the part number (see “Ordering and PVR Information”
on page 4).
64
AMCC
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
