MPC8315ECVRAGDA datasheet(24/112 Pages) FREESCALE

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MPC8315E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0

Freescale Semiconductor

DUART

Figure 9 provides the AC test load for the DDR bus.

Figure 9. DDR AC Test Load

8DUART

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

8.1

DUART DC Electrical Characteristics

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

8.2

DUART AC Electrical Specifications

Table 22 lists 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.

Table 21. DUART DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

2.1

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 eighth sampled 0 after the 1-to-0 transition of the

start bit. Subsequent bit values are sampled each sixteenth sample.

Output

Z0 = 50 Ω

GVDD/2

RL = 50 Ω

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