MPC8360CVVALFHA datasheet(27/102 Pages) FREESCALE

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MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 5

Freescale Semiconductor

GMII, MII, RMII, TBI, RGMII, and RTBI AC Timing Specifications

8.2.1.1

GMII Transmit AC Timing Specifications

This table provides the GMII transmit AC timing specifications.

This figure shows the GMII transmit AC timing diagram.

Figure 10. GMII Transmit AC Timing Diagram

Table 27. GMII 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

tGTX

—8.0

—

GTX_CLK duty cycle

tGTXH/tGTX

—

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

tGTKHDX

tGTKHDV

0.5

—

——

5.0

GTX_CLK clock rise time, (20% to 80%)

tGTXR

——

1.0

—

GTX_CLK clock fall time, (80% to 20%)

tGTXF

——

1.0

—

GTX_CLK125 clock period

tG125

—8.0

—

GTX_CLK125 reference clock duty cycle measured at

LVDD/2

tG125H/tG125

—

Notes:

1. The symbols used for timing specifications follow the pattern 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, tGTKHDV symbolizes GMII

transmit timing (GT) with respect to the tGTX clock reference (K) going to the high state (H) relative to the time date input

signals (D) reaching the valid state (V) to state or setup time. Also, tGTKHDX symbolizes GMII transmit timing (GT) with

respect to the tGTX clock reference (K) going to the high state (H) relative to the time date input signals (D) going invalid (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 tGTX represents the GMII(G) 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 signal and does not follow the original symbol naming

convention.

3. In rev. 2.0 silicon, due to errata, tGTKHDX minimum and tGTKHDV maximum are not supported when the GTX_CLK is

selected. Refer to Errata QE_ENET18 in Chip Errata for the MPC8360E, Rev. 1.

GTX_CLK

TXD[7:0]

tGTKHDX

tGTX

tGTXH

tGTXR

tGTXF

TX_EN

TX_ER

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