MPC8533E datasheet(26/112 Pages) FREESCALE

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MPC8533E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

Enhanced Three-Speed Ethernet (eTSEC), MII Management

Timing diagrams for FIFO appear in Figure 7 and Figure 8.

Figure 7. FIFO Transmit AC Timing Diagram

Figure 8. FIFO Receive AC Timing Diagram

8.3.2

GMII AC Timing Specifications

This section describes the GMII transmit and receive AC timing specifications.

8.3.2.1

GMII Transmit AC Timing Specifications

Table 25 provides the GMII transmit AC timing specifications.

Rise time RX_CLK (20%–80%)

tFIRR

—

0.75

—

Fall time RX_CLK (80%–20%)

tFIRF

—

0.75

—

RXD[7:0], RX_DV, RX_ER setup time to RX_CLK

tFIRDV

1.5

—

RX_CLK to RXD[7:0], RX_DV, RX_ER hold time

tFIRDX

0.5

—

Table 25. GMII Transmit AC Timing Specifications

At recommended operating conditions with L/TVDD of 3.3 V ± 5% or 2.5 V ± 5%

Parameter/Condition

Symbol1

Min

Typ

Max

Unit

Notes

GTX_CLK clock period

tGTX

—

8.0

—ns—

GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay

tGTKHDX

0.2

—

5.0

GTX_CLK data clock rise time (20%-80%)

tGTXR

——

1.0

Table 24. FIFO Mode Receive AC Timing Specification (continued)

At recommended operating conditions with L/TVDD of 3.3 V ± 5% or 2.5 V ± 5%

Parameter/Condition

Symbol

Min

Typ

Max

Unit

Notes

tFITF

TXD[7:0]

TX_EN

GTX_CLK

TX_ER

tFITDV

tFITR

tFITH

tFIT

tFITDX

tFIRF

tFIRR

RX_CLK

RXD[7:0]

RX_DV

RX_ER

Valid Data

tFIRDX

tFIRDV

tFIRH

tFIR

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