49.30 GMAC Electrical Specifications
AC Characteristics | Standard Operating Conditions: VDD33 = VDDIO = AVDD
= 1.9–3.6V (Unless Otherwise Stated) Operating Temperature: -40°C ≤ TA ≤ +125°C for Extended Temperature | ||||||
---|---|---|---|---|---|---|---|
Parameter Number | Symbol | Characteristics | Min. | Typ. | Max. | Units | Conditions |
MDC/MDIO AC Timing Requirements | |||||||
ET_1a | tMDIOSU | MDIO Set-up Time | 22 | — | — | ns | CLOAD = 10 pF |
ET_3a | tMDIOHOLD | MDIO Hold Time | 0 | — | — | ns | |
ET_5a | tMDIOVAL | MDIO OUTPUT Valid Time | 0.4 | — | 9.2 | ns | |
ET_6 | tMDCcyc | MDC CLK period(1) | 400 | — | — | ns | |
RMII AC Timing Requirements | |||||||
ET_29 | tREFCLK | Reference Clock Frequency | — | 50 | — | MHz | CLOAD = 10 pF |
ET_31 | tREFCLKIH | Reference Clock High Time | — | tREFCLK /2 | — | ns | |
ET_33 | tREFCLKIL | Reference Clock Low Time | — | tREFCLK /2 | — | ns | |
ET_35 | REFCLKDC | Reference Clock Duty Cycle | — | 50 | — | % | |
ET_41 | tRX[1:0]SU tRXERSU | RXD[1:0], RXER Set-up time | 4 | — | — | ns | |
ET_43 | tRX[1:0]HOLD tRXERHOLD | RXD[1:0], RXER hold time | 2.5 | — | — | ns | |
ET_45 | tTX[1:0]VAL tTXENVAL | TX[1:0], TXEN output valid time | 5 | — | 12 | ns | VDDIO = 3V, CLOAD = 10 pF |
5 | — | 16 | ns | VDDIO = 1.9V, CLOAD = 10 pF | |||
Note:
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