MPC8313E datasheet(21/92 Pages) FREESCALE

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MPC8313E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

DUART

7DUART

This section describes the DC and AC electrical specifications for the DUART interface.

7.1

DUART DC Electrical Characteristics

Table 21 provides the DC electrical characteristics for the DUART interface.

7.2

DUART AC Electrical Specifications

Table 22 provides the AC timing parameters for the DUART interface.

Ethernet: Three-Speed Ethernet, MII Management

This section provides the AC and DC electrical characteristics for three-speed, 10/100/1000, and MII

management.

8.1

Enhanced Three-Speed Ethernet Controller (eTSEC)

(10/100/1000 Mbps)—MII/RMII/RGMII/SGMII/RTBI Electrical

Characteristics

The electrical characteristics specified here apply to all the media independent interface (MII), reduced

gigabit media independent interface (RGMII), serial gigabit media independent interface (SGMII), and

reduced ten-bit interface (RTBI) signals except management data input/output (MDIO) and management

data clock (MDC). The MII interface is defined for 3.3 V, while the RMII, RGMII, SGMII, and RTBI

Table 21. DUART DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

2.0

NVDD + 0.3

Low-level input voltage NVDD

VIL

–0.3

0.8

High-level output voltage, IOH = –100 μAVOH

NVDD – 0.2

—

Low-level output voltage, IOL = 100 μAVOL

—0.2

Input current (0 V

≤VIN ≤ NVDD)IIN

—± 5

μA

Table 22. DUART AC Timing Specifications

Parameter

Value

Unit

Notes

Minimum baud rate

256

baud

—

Maximum baud rate

> 1,000,000

baud

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 8th sampled 0 after the 1-to-0 transition of the start bit.

Subsequent bit values are sampled each 16th sample.

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