MPC8358E datasheet(32/96 Pages) FREESCALE

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MPC8358E PowerQUICC™ II Pro Processor Revision 2.1 PBGA Silicon Hardware Specifications, Rev. 1

Freescale Semiconductor

UCC Ethernet Controller: Three-Speed Ethernet, MII Management

8.2.4

TBI AC Timing Specifications

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

8.2.4.1

TBI Transmit AC Timing Specifications

Table 32 provides the TBI transmit AC timing specifications.

Figure 16 shows the TBI transmit AC timing diagram.

Figure 16. TBI Transmit AC Timing Diagram

Table 32. TBI Transmit AC Timing Specifications

At recommended operating conditions with LVDD / OVDD of 3.3 V ± 10%.

Parameter/Condition

Symbol1

Min

Typ

Max

Unit

Notes

GTX_CLK clock period

tTTX

—8.0

—

GTX_CLK duty cycle

tTTXH/tTTX

—

GTX_CLK to TBI data TCG[9:0] delay

tTTKHDX

tTTKHDV

0.9

—

——

5.0

GTX_CLK clock rise time, VIL(min) to VIH(max)

tTTXR

——

1.0

GTX_CLK clock fall time, VIH(max) to VIL(min)

tTTXF

——

1.0

GTX_CLK125 reference clock period

tG125

—8.0

—

GTX_CLK125 reference clock duty cycle

tG125H/tG125

—

Notes:

1. The symbols used for timing specifications herein 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, tTTKHDV

symbolizes the TBI transmit timing (TT) with respect to the time from tTTX (K) going high (H) until the referenced data

signals (D) reach the valid state (V) or setup time. Also, tTTKHDX symbolizes the TBI transmit timing (TT) with respect to

the time from tTTX (K) going high (H) until the referenced data signals (D) reach the invalid state (X) or hold time. 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 tTTX represents the TBI (T) transmit (TX) clock. For rise and fall times, the latter

convention is used with the appropriate letter: R (rise) or F (fall).

2. This symbol is used to represent the external GTX_CLK125 and does not follow the original symbol naming convention.

GTX_CLK

TXD[7:0]

tTTX

tTTXH

tTTXR

tTTXF

tTTKHDX

TX_EN

TX_ER

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