MPC8533VTALJB datasheet(32/116 Pages) FREESCALE

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MPC8533E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 3

Freescale Semiconductor

Enhanced Three-Speed Ethernet (eTSEC), MII Management

Figure 15 shows the TBI transmit AC timing diagram.

Figure 15. TBI Transmit AC Timing Diagram

8.5.2

TBI Receive AC Timing Specifications

Table 30 provides the TBI receive AC timing specifications.

Table 30. TBI Receive 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

PMA_RX_CLK[0:1] clock period

tTRX

—

16.0

—

PMA_RX_CLK[0:1] skew

tSKTRX

7.5

—

8.5

—

PMA_RX_CLK[0:1] duty cycle

tTRXH/tTRX

—

RCG[9:0] setup time to rising PMA_RX_CLK

tTRDVKH

2.5

—

PMA_RX_CLK to RCG[9:0] hold time

tTRDXKH

1.5

—

PMA_RX_CLK[0:1] clock rise time (20%-80%)

tTRXR

0.7

—

2.4

—

PMA_RX_CLK[0:1] clock fall time (80%-20%)

tTRXF

0.7

—

2.4

—

Note:

1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for

inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tTRDVKH symbolizes TBI receive

timing (TR) with respect to the time data input signals (D) reach the valid state (V) relative to the tTRX clock reference (K)

going to the high (H) state or setup time. Also, tTRDXKH symbolizes TBI receive timing (TR) with respect to the time data input

signals (D) went invalid (X) relative to the tTRX clock reference (K) going to the high (H) state. Note that, in general, the clock

reference symbol representation is based on three letters representing the clock of a particular functional. For example, the

subscript of tTRX represents the TBI (T) receive (RX) clock. For rise and fall times, the latter convention is used with the

appropriate letter: R (rise) or F (fall). For symbols representing skews, the subscript is skew (SK) followed by the clock that

is being skewed (TRX).

GTX_CLK

TCG[9:0]

tTTX

tTTXH

tTTXR

tTTXF

tTTKHDV

tTTKHDX

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