mpc8349ea Freescale Semiconductor, Inc, mpc8349ea Datasheet - Page 21

• Manufacturer Part Number: mpc8349ea
• Description: Mpc8349ea Powerquicc
• Manufacturer: Freescale Semiconductor, Inc

7.2
Table 21
8
This section provides the AC and DC electrical characteristics for three-speeds (10/100/1000 Mbps) and
MII management.
8.1
The electrical characteristics specified here apply to gigabit media independent interface (GMII),the media
independent interface (MII), ten-bit interface (TBI), reduced gigabit media independent
interface (RGMII), and reduced ten-bit interface (RTBI) signals except management data input/output
(MDIO) and management data clock (MDC). The MII, GMII, and TBI interfaces are defined for 3.3 V,
and the RGMII and RTBI interfaces are defined for 2.5 V. The RGMII and RTBI interfaces follow the
Hewlett-Packard Reduced Pin-Count Interface for Gigabit Ethernet Physical Layer Device Specification,
Version 1.2a (9/22/2000). The electrical characteristics for MDIO and MDC are specified in
“Ethernet Management Interface Electrical Characteristics.”
Freescale Semiconductor
Minimum baud rate
Maximum baud rate
Oversample rate
Notes:
1. Actual attainable baud rate will be limited by the latency of interrupt processing.
2. The middle of a start bit is detected as the 8
High-level output voltage, I
Low-level output voltage, I
sampled each 16
Ethernet: Three-Speed Ethernet, MII Management
provides the AC timing parameters for the DUART interface of the MPC8349EA.
DUART AC Electrical Specifications
Three-Speed Ethernet Controller
(TSEC)—GMII/MII/TBI/RGMII/RTBI Electrical Characteristics
MPC8349EA PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications, Rev. 10
th
sample.
OL
OH
Table 20. DUART DC Electrical Characteristics (continued)
Parameter
= 100 μA
= –100 μA
Parameter
Table 21. DUART AC Timing Specifications
th
sampled 0 after the 1-to-0 transition of the start bit. Subsequent bit values are
Symbol
V
V
OH
OL
Ethernet: Three-Speed Ethernet, MII Management
OV
DD
Min
> 1,000,000
—
– 0.2
Value
256
16
Max
0.2
—
baud
baud
Unit
—
Section 8.3,
Notes
Unit
—
V
V
1
2
21