UT700 datasheet(36/46 Pages) AEROFLEX

36 / 46 page

36-00-00-000

Ver. 1.3.1

Aeroflex Microelectronics Solutions - HiRel

4.7 Timing Characteristics for Ethernet Interface

(VDD = 3.3V + 0.3V; VDDC = 1.2V + 0.1V; TC = -55

oC to 105oC)

Notes:

1. All outputs are measured using the load conditions shown in Figure 17.

2. ERX_ER timing is guaranteed by design.

3. ERX_COL and ERX_CRS are asynchronous inputs and are not tested.

4. tAMBA is defined as tSYSCLK for NODIV = 1 and tSYSCLK * 2 for NODIV = 0.

5. Guaranteed by design.

Figure 13. Ethernet Transmit and Receive Timing

Figure 14. Ethernet MDIO Interface Timing

Symbol

Description

Conditions

Min

Max

Units

t251

ETX_CLK

↑ to output valid

(ETXD[3:0], and ETX_EN)

t262,3

Setup time to ERX_CLK

↑

(ERX_DV, ERX_ER, and ERXD[3:0])

1--

t272,3

Hold time from ERX_CLK

↑

(ERX_DV, ERX_ER, and ERXD[3:0])

1--

t281

EMDC

↑ to output valid (EMDIO)

-4+tAMBA

4+tAMBA

t295

Setup time to EMDC

↑ (EMDIO)

t305

Hold time from EMDC

↑ (EMDIO)

t27

t26

t25

ETX_CLK

All Outputs

ERX_CLK

All Inputs

t30

t29

t28

EMDC

EMDIO (Output)

EMDIO (Input)

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