mpc8555e Freescale Semiconductor, Inc, mpc8555e Datasheet - Page 12

• Manufacturer Part Number: mpc8555e
• Description: Mpc8555e Powerquicc Iii Processor With Integrated Security
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
Figure 3
signals, respectively.
2.1.4
Table 3
preliminary estimates.
12
Local bus interface utilities signals
PCI signals
DDR signal
TSEC/10/100 signals
DUART, system control, I2C, JTAG
Notes:
1. The drive strength of the local bus interface is determined by the configuration of the appropriate bits in PORIMPSCR.
2. The drive strength of the PCI interface is determined by the setting of the PCI_GNT1 signal at reset.
MPC8555E PowerQUICC™ III Integrated Communications Processor Hardware Specification, Rev. 4.2
provides information on the characteristics of the output driver strengths. The values are
shows the undershoot and overshoot voltage of the PCI interface of the MPC8555E for the 3.3-V
Output Driver Characteristics
Figure 3. Maximum AC Waveforms on PCI interface for 3.3-V Signaling
Driver Type
Undervoltage
Overvoltage
Waveform
Waveform
Table 3. Output Drive Capability
11 ns
(Min)
4 ns
(Max)
Programmable Output
62.5 ns
Impedance (Ω)
42 (default)
42 (default)
4 ns
(Max)
+7.1 V
+3.6 V
–3.5 V
0 V
25
25
20
42
42
7.1 V p-to-p
7.1 V p-to-p
(Min)
(Min)
LV
GV
OV
OV
DD
Voltage
Freescale Semiconductor
Supply
DD
DD
DD
= 2.5/3.3 V
= 3.3 V
= 2.5 V
= 3.3 V
Notes
1
2