MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4
Freescale Semiconductor
17
RESET Initialization
4.3
Gigabit Reference Clock Input Timing
Table 9
provides the Gigabit reference clocks (GTX_CLK125) AC timing specifications.
5
RESET Initialization
This section describes the DC and AC electrical specifications for the reset initialization timing and
electrical requirements of the MPC8360E/58E.
5.1
RESET DC Electrical Characteristics
Table 10
provides the DC electrical characteristics for the RESET pins of the device.
Table 9. GTX_CLK125 AC Timing Specifications
At recommended operating conditions with LV
DD
= 2.5 ± 0.125 mV/ 3.3 V ± 165 mV
Parameter/Condition
Symbol
Min
Typical
Max
Unit
Notes
GTX_CLK125 frequency
t
G125
—
125
—
MHz
—
GTX_CLK125 cycle time
t
G125
—
8
—
ns
—
GTX_CLK rise and fall time
LV
DD
= 2.5 V
LV
DD
= 3.3 V
t
G125R
/t
G125F
—
—
0.75
1.0
ns
1
GTX_CLK125 duty cycle
GMII & TBI
1000Base-T for RGMII & RTBI
t
G125H
/t
G125
45
47
—
55
53
%
2
GTX_CLK125 jitter
—
—
—
±150
ps
2
Notes:
1. Rise and fall times for GTX_CLK125 are measured from 0.5 and 2.0 V for LV
DD
= 2.5 V and from 0.6 and 2.7 V for
LV
DD
= 3.3 V.
2. GTX_CLK125 is used to generate the GTX clock for the UCC Ethernet transmitter with 2% degradation. The GTX_CLK125
duty cycle can be loosened from 47%/53% as long as the PHY device can tolerate the duty cycle generated by GTX_CLK.
See
Section 8.2.2, “MII AC Timing Specifications
,”
Section 8.2.3, “RMII AC Timing Specifications
,” and
Section 8.2.5, “RGMII
and RTBI AC Timing Specifications”
for the duty cycle for 10Base-T and 100Base-T reference clock.
Table 10. RESET Pins DC Electrical Characteristics
Characteristic
Symbol
Condition
Min
Max
Unit
Input high voltage
V
IH
—
2.0
OV
DD
+ 0.3
V
Input low voltage
V
IL
—
–0.3
0.8
V
Input current
I
IN
—
—
±10
μ
A
Output high voltage
V
OH
I
OH
= –8.0 mA
2.4
—
V
Output low voltage
V
OL
I
OL
= 8.0 mA
—
0.5
V