System Clock; Real Time Clock Input - SMART Embedded Computing MVME4100 Programmer's Reference Manual

Table 4-12
Device
MPC8548E
MPC8548E
PMC1
PMC2
Tsi148
USB
BCM5482S
BCM5482S
Control and Timers
PLD
QUART
USB
RTC
ICS9FG104
MPC8548E
XMCspan
4.13.1

System Clock

The system clock is driven by an oscillator. The following table defines the clock frequency.
Table 4-13
SYSCLK
66.67 MHz
4.13.2

Real Time Clock Input

The RTC clock input is driven by 1 MHz clock generated by the Control and Timers PLD.
This provides a fixed clock reference for the MPC8548E PIC timers which software can use
as a known timing reference.
MVME4100 Single Board Computer Programmer's Reference (6806800H19D)
Clock Assignments (continued)
Clock Signal
CLK_RTC
CLK_PCI
CLK_PCI1
CLK_PCI2
CLK_PCI3
CLK_PCI4
CLK2_25MHZ
CLK3_25MHZ
CLK1_25MHZ
CLK_LBP
CLK_1.8M
CLK_48MHZ
CLK_32K
CLK4_33MHZ
CLK_PCIE0
CLK_PCIE1
Clock Frequencies
Core MXP (Platform)
1.3 GHz 533 MHz
Frequency Clock Tree
(MHz) Source
1 PLD
66/100 MPC9855
33/66/100 MPC9855
33/66/100 MPC9855
66/100 MPC9855
33 MPC9855
25 Oscillator/Buffer
25 Oscillator/Buffer
25 Oscillator/Buffer
MPX CLK / 8 MPC8548E
1.8432 Oscillator
48 Oscillator
32.768 KHz Crystal
25 Oscillator/Buffer
100 ICS9FG104
100 ICS9FG104
DDR2
266 MHz
Programming Details
Qty VIO
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 +2.5 V
1 +2.5 V
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 +3.3 V
1 DIFF
1 DIFF
LB
33 MHz
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