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LAN88730BM-C Datasheet(PDF) 9 Page - Microchip Technology |
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LAN88730BM-C Datasheet(HTML) 9 Page - Microchip Technology |
9 / 82 page 2012-2015 Microchip Technology Inc. DS60001256B-page 9 LAN88730 Note 1: Configuration strap values are latched on power-on reset and system reset. Configuration straps are iden- tified by an underlined symbol name. Signals that function as configuration straps must be augmented with an external resistor when connected to a load. Refer to Section 3.7, "Configuration Straps" for additional information. 1 Receive Clock (MII Mode) RXCLK VO8 In MII mode, this pin is the receive clock output. • MII (100BASE-TX): 25 MHz • MII (10BASE-T): 2.5 MHz PHY Address 1 Configuration Strap PHYAD1 VIS (PD) Combined with PHYAD0 and PHYAD2, this config- uration strap sets the transceiver’s SMI address. See Note 1 for more information on configuration straps. Note: Refer to Section 3.7.1, "PHYAD[2:0]: PHY Address Configuration" for addi- tional information. 1 Receive Data Valid RXDV VO8 Indicates that recovered and decoded data is avail- able on the RXD pins. 1 Collision Detect (MII Mode) COL VO8 This signal is asserted to indicate detection of a collision condition in MII mode. Carrier Sense / Receive Data Valid (RMII Mode) CRS_DV VO8 This signal is asserted to indicate the receive medium is non-idle in RMII mode. When a 10BASE-T packet is received, CRS_DV is asserted, but RXD[1:0] is held low until the SFD byte (10101011) is received. Note: Per the RMII standard, transmitted data is not looped back onto the receive data pins in 10BASE-T half-duplex mode. PHY Operat- ing Mode 2 Configuration Strap MODE2 VIS (PU) Combined with MODE0 and MODE1, this configu- ration strap sets the default PHY mode. See Note 1 for more information on configuration straps. Note: Refer to Section 3.7.2, "MODE[2:0]: Mode Configuration" for additional details. 1 Carrier Sense (MII Mode) CRS VO8 (PD) This signal indicates detection of a carrier in MII mode. TABLE 2-1: MII/RMII SIGNALS (CONTINUED) Num Pins Name Symbol Buffer Type Description |
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