MPC8360 datasheet(28/112 Pages) FREESCALE

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

Freescale Semiconductor

UCC Ethernet Controller: Three-Speed Ethernet, MII Management

8.2

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

The AC timing specifications for GMII, MII, TBI, RGMII, and RTBI are presented in this section.

8.2.1

GMII Timing Specifications

This sections describe the GMII transmit and receive AC timing specifications.

8.2.1.1

GMII Transmit AC Timing Specifications

Table 27 provides the GMII transmit AC timing specifications.

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, VIL(min) to VIH(max)

tGTXR

——

1.0

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

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 herein 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. Please refer to

QE_ENET18 in the device errata document.

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