8
MPC106 PCI Bridge/Memory Controller Hardware Specifications
Electrical and Thermal Characteristics
Figure 2 provides the SYSCLK input timing diagram.
Figure 2. SYSCLK Input Timing Diagram
1.4.2.2 Input AC Specifications
Table 7 provides the input AC timing specifications for the 106 as defined in Figure 3 and Figure 4. These
specifications are for operation between 16.67 and 33.33 MHz PCI bus clock (SYSCLK) frequencies.
Assume Vdd = AVdd = 3.3 ± 5% V DC, GND = 0 V DC, and 0
≤
T
j
≤
105 °C.
Table 6. Clock AC Timing Specifications
Num
Characteristic
SYSCLK/Core
33/66 MHz
SYSCLK/Core
33/83.3 MHz
Unit
Notes
Min
Max
Min
Max
—
60x processor bus (core) frequency
16.67
66
16.67
83.3
MHz
1
—
VCO frequency
120
200
120
200
MHz
1, 2
—
SYSCLK frequency
16.67
33.33
16.67
33.33
MHz
1
1
SYSCLK cycle time
30.0
60.0
30.0
60.0
ns
—
2, 3
SYSCLK rise and fall time
—
2.0
—
2.0
ns
3
4
SYSCLK duty cycle measured at 1.4 V
40
60
40
60
%
4
—
SYSCLK jitter
—
±200
—
±200
ps
5
—
106 internal PLL relock time
—
100
—
100
μ
s
4, 6
Notes
1
Caution
frequency, CPU (core) frequency, and PLL (VCO) frequency do not exceed their respective maximum or minimum
operating frequencies. Refer to the PLL[0–3] signal description in Section 1.8, “System Design Information,” for
valid PLL[0–3] settings, and to Section 1.9, “Document Revision History,” for available frequencies and part
numbers.
2
VCO operating range for extended temperature devices is different. Refer to MPC106ARXTGPNS/D for more
information.
3
Rise and fall times for the SYSCLK input are measured from 0.4 V to 2.4 V.
4
Timing is guaranteed by design and characterization and is not tested.
5
The total input jitter (short-term and long-term combined) must be under ±200 ps.
6
PLL-relock time is the maximum time required for PLL lock after a stable Vdd, AVdd, and SYSCLK are reached
during the power-on reset sequence. This specification also applies when the PLL has been disabled and
subsequently re-enabled during the sleep and suspend power-saving modes. Also note that HRST must be held
asserted for a minimum of 255 bus clocks after the PLL-relock time (100
μ
s) during the power-on reset sequence.
:
: The SYSCLK frequency and PLL[0–3] settings must be chosen such that the resulting SYSCLK (bus)
VM
VM = Midpoint Voltage (1.4 V)
2
3
CV
IL
CV
IH
1
SYSCLK
VM
VM
4
4