mpc8308 Freescale Semiconductor, Inc, mpc8308 Datasheet - Page 15

• Manufacturer Part Number: mpc8308
• Description: Mpc8308 Powerquicc Ii Pro Processor Hardware Specification
• Manufacturer: Freescale Semiconductor, Inc

7.2
Table 20
8
This section provides the AC and DC electrical characteristics for three-speed, 10/100/1000, and MII
management. MPC8308 supports dual Ethernet controllers.
8.1
The electrical characteristics specified here apply to all the media independent interface (MII) and reduced
gigabit media independent interface (RGMII) signals except management data input/output (MDIO) and
management data clock (MDC). The RGMII interface is defined for 2.5 V, while the MII interface can be
operated at 3.3 V. The RGMII interface follows 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
Electrical Characteristics.”
Freescale Semiconductor
Ethernet: Three-Speed Ethernet, MII Management
Low-level output voltage, I
Input current (0 V ≤V
provides the AC timing parameters for the DUART interface.
DUART AC Electrical Specifications
Enhanced Three-Speed Ethernet Controller (eTSEC)
(10/100/1000 Mbps)—MII/RGMII Electrical Characteristics
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 8
Subsequent bit values are sampled each 16
Parameter
Parameter
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 1
Table 19. DUART DC Electrical Characteristics (continued)
IN
≤ NV
OL
DD
Table 20. DUART AC Timing Specifications
= 100 μA
)
> 1,000,000
Symbol
Value
256
V
I
16
OL
IN
th
th
sampled 0 after the 1-to-0 transition of the start bit.
sample.
Section 8.3, “Ethernet Management Interface
Min
—
—
baud
baud
Unit
—
Ethernet: Three-Speed Ethernet, MII Management
Max
0.2
± 5
Notes
—
1
2
Unit
μA
V
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