MPC8313E-RDB Freescale Semiconductor, MPC8313E-RDB Datasheet - Page 91

• Manufacturer Part Number: MPC8313E-RDB
• Description: BOARD PROCESSOR
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MCUr

Specifications of MPC8313E-RDB

• Contents: Reference Design Board, Software and Documentation
• Termination Type: SMD
• Supply Voltage Max: 1.05V
• Tool / Board Applications: Wired Connectivity-LIN, CAN, Ethernet, USB
• Mcu Supported Families: POWERQUICC II PRO
• Rohs Compliant: Yes
• Filter Terminals: SMD
• Silicon Manufacturer: Freescale
• Silicon Core Number: MPC83xx
• Kit Application Type: Communication & Networking
• Application Sub Type: Ethernet
• Core Architecture: Power Architecture
• Silicon Family Name: PowerQUICC II PRO
• For Use With/related Products: MPC8313E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The value of this resistance and the strength of the driver’s current source can be found by making two
measurements. First, the output voltage is measured while driving logic 1 without an external differential
termination resistor. The measured voltage is V
while driving logic 1 with an external precision differential termination resistor of value R
measured voltage is V
R
Table 72
nominal NV
22.7
The MPC8313E provides the user with power-on configuration options which can be set through the use
of external pull-up or pull-down resistors of 4.7 kΩ on certain output pins (see customer visible
configuration pins). These pins are generally used as output only pins in normal operation.
While HRESET is asserted however, these pins are treated as inputs. The value presented on these pins
while HRESET is asserted, is latched when PORESET deasserts, at which time the input receiver is
disabled and the I/O circuit takes on its normal function. Careful board layout with stubless connections
to these pull-up/pull-down resistors coupled with the large value of the pull-up/pull-down resistor should
minimize the disruption of signal quality or speed for output pins thus configured.
Freescale Semiconductor
Note: Nominal supply voltages. See
term
Impedance
Differential
R
R
× (V
N
P
summarizes the signal impedance targets. The driver impedance are targeted at minimum V
Configuration Pin Muxing
1
/V
DD
2
, 105°C.
– 1). The drive current is then I
Configuration, Power
Local Bus, Ethernet,
DUART, Control,
MPC8313E PowerQUICC
Management
42 Target
42 Target
2
= (1/(1/R
NA
Table
Figure 60. Driver Impedance Measurement
1
Data
+ 1/R
Table 72. Impedance Characteristics
1, T
(Not Including PCI
J
Output Clocks)
2
= 105°C.
™
)) × I
PCI Signals
II Pro Processor Hardware Specifications, Rev. 3
25 Target
25 Target
NA
1
source
source
= R
source
. Solving for the output impedance gives R
= V
1
× I
PCI Output Clocks
/R
PCI_SYNC_OUT)
Pad
source
R
source
R
NV
(Including
N
P
42 Target
42 Target
V
SS
DD
NA
. Second, the output voltage is measured
.
SW2
SW1
DDR DRAM
20 Target
20 Target
NA
System Design Information
Symbol
Z
term
DIFF
Z
Z
0
0
. The
source
Unit
=
Ω
Ω
Ω
DD
91
,