STK1000/MAC interface
From AVRFreaks Wiki
STK1000 have two Media Access Control (MAC) interfaces for use with by the Ethernet physical layer chip.
Peripherals and connectors
Notes to developers
Default settings
Default setup is done by resistors connected to the PHY circuit. These settings can be changed through the management interface after reset.
Default settings set by resistors are:
- Auto Negotiation enabled
- Full duplex
- Twisted pair operation mode
- Both PHY's set to power down
- LED1 (yellow LED) indicate Speed
- LED2 (green LED) indicate Link/MII Isolate
- TX slew rate 3.3 ns
Signals
Please refer the datasheet for the AVR32 processor on you daughter board for a description of these signals
Signal | RMII | MII | Management |
---|---|---|---|
COL | Collision detect | ||
CRS | Carrier sense | ||
MDC | Management Data Clock | ||
MDIO | Management Data Input/Output | ||
RXCLK | Receive Clock | ||
RXD[0..3] | Receive Data bit 0 and 1 | Receive Data bit 0 to 3 | |
RXDV | Carrier sense / Data Valid | Data Valid | |
RXER | Receive error | Receive error | |
SPEED | Set to 1 to indicate 100 Mbit/s, 0 for 10 Mbit/s | ||
TXCLK | Reference clock | Transmit clock | |
TXD[0..3] | Transmit Data bit 0 and 1 | Transmit Data bit 0 to 3 | |
TXEN | Transmit enable | Transmit enable | |
TXER | Transmit error |