mpc8314e Freescale Semiconductor, Inc, mpc8314e Datasheet - Page 22

• Manufacturer Part Number: mpc8314e
• Description: Powerquicc Ii Pro Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

DUART
Figure 8
8
This section describes the DC and AC electrical specifications for the DUART interface.
8.1
Table 21
8.2
Table 22
9
This section provides the AC and DC electrical characteristics for three-speed, 10/100/1000, and MII
management.
22
High-level input voltage
Low-level input voltage NVDD
High-level output voltage, I
Low-level output voltage, I
Input current (0 V ≤V
DUART
Ethernet: Three-Speed Ethernet, MII Management
provides the AC test load for the DDR bus.
lists the DC electrical characteristics for the DUART interface.
lists the AC timing parameters for the DUART interface.
DUART DC Electrical Characteristics
DUART AC Electrical Specifications
Minimum baud rate
Maximum baud rate
Oversample rate
Notes:
1. Actual attainable baud rate is limited by the latency of interrupt processing.
2. The middle of a start bit is detected as the eighth sampled 0 after the 1-to-0 transition of the
start bit. Subsequent bit values are sampled each sixteenth sample.
IN
MPC8314E PowerQUICC
≤ NVDD)
OL
OH
Output
= 100 μA
= –100 μA
Parameter
Table 21. DUART DC Electrical Characteristics
Table 22. DUART AC Timing Specifications
Parameter
Figure 8. DDR AC Test Load
Z
™
0
II Pro Processor Hardware Specifications, Rev. 0
= 50 Ω
> 1,000,000
Symbol
R
V
V
V
V
Value
L
I
OH
IN
OL
256
IH
IL
16
= 50 Ω
NVDD – 0.2
GVDD/2
–0.3
Min
baud
baud
Unit
2.1
—
—
—
Freescale Semiconductor
Notes
NVDD + 0.3
—
1
2
Max
0.8
0.2
± 5
—
Unit
μA
V
V
V
V