MPC8321EVRADDC datasheet(19/82 Pages) FREESCALE

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MPC8323E PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 4

Freescale Semiconductor

DUART

7DUART

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

MPC8323E.

7.1

DUART DC Electrical Characteristics

Table 20 provides the DC electrical characteristics for the DUART interface of the MPC8323E.

7.2

DUART AC Electrical Specifications

Table 21 provides the AC timing parameters for the DUART interface of the MPC8323E.

Ethernet and MII Management

This section provides the AC and DC electrical characteristics for Ethernet and MII management.

8.1

Ethernet Controller (10/100 Mbps)—MII/RMII Electrical

Characteristics

The electrical characteristics specified here apply to all MII (media independent interface) and RMII

(reduced media independent interface), except MDIO (management data input/output) and MDC

Table 20. DUART DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

2OVDD + 0.3

Low-level input voltage OVDD

VIL

–0.3

0.8

High-level output voltage, IOH = –100 μAVOH

OVDD – 0.2

—

Low-level output voltage, IOL = 100 μAVOL

—0.2

Input current (0 V

≤ VIN ≤ OVDD)1

IIN

—±5

μA

Note:

1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.

Table 21. 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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