ADSP-BF607 datasheet(97/112 Pages) AD

97 / 112 page

Rev. 0

Page 97 of 112

June 2013

ADSP-BF606/ADSP-BF607/ADSP-BF608/ADSP-BF609

Table 66. 10/100 Ethernet MAC Controller Timing: RMII Station Management

Parameter

VDD_EXT

1.8V/3.3V Nominal

Min

Max

Unit

Timing Requirements

tMDIOS

ETHx_MDIO Input Valid to ETHx_MDC Rising Edge (Setup)

tMDCIH

ETHx_MDC Rising Edge to ETHx_MDIO Input Invalid (Hold)

Switching Characteristics

tMDCOV

ETHx_MDC Falling Edge to ETHx_MDIO Output Valid

tSCLK0 + 5

tMDCOH

ETHx_MDC Falling Edge to ETHx_MDIO Output Invalid (Hold)

tSCLK0 –1

1 ETHx_MDC/ETHx_MDIO is a 2-wire serial bidirectional port for controlling one or more external PHYs. ETHx_MDC is an output clock whose minimum period is

programmable as a multiple of the system clock SCLK0. ETHx_MDIO is a bidirectional data line.

Figure 52. 10/100 Ethernet MAC Controller Timing: RMII Station Management

ETHx_MDIO

(INPUT)

ETHx_MDIO

(OUTPUT)

ETHx_MDC

(OUTPUT)

tMDIOS

tMDCOH

tMDCIH

tMDCOV

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