AC104QF
Ultra Low Power 10/100 Quad RMII Ethernet Transceiver
2055 Gateway Parkway Suite 700, San Jose, CA 95110 (408) 453-3700 (www.altimacom.com)
Altima Communications Inc. reserves the right to make changes to this document without notice.
Document Revision 4.0
Page 3 of 37
General Description......................................................................................................................................................................... 1
Features.............................................................................................................................................................................................. 1
Block Diagram ................................................................................................................................................................................. 1
Pin Diagram - AC104QF................................................................................................................................................................ 5
Pin Descriptions............................................................................................................................................................................... 6
MDI (Media Dependent Interface) Pins.....................................................................................................................................6
RMII (Reduced Media Independent Interface) Pins ................................................................................................................7
SMI (Serial Management Interface) Pins ..................................................................................................................................7
Phy Address Pins ...........................................................................................................................................................................8
Mode Pins........................................................................................................................................................................................8
LED Pins .........................................................................................................................................................................................8
Power and Ground Pins ................................................................................................................................................................9
Functional Description.................................................................................................................................................................. 10
MAC Interface................................................................................................................................................................................ 10
RMII ...................................................................................................................................................................................................10
SMI ...............................................................................................................................................................................................10
Interrupt.........................................................................................................................................................................................11
Carrier Sense / RX_DV ..............................................................................................................................................................11
Media Interface .............................................................................................................................................................................. 11
10Base-T ...........................................................................................................................................................................................11
Transmit Function........................................................................................................................................................................11
Receive Function .........................................................................................................................................................................11
Link Monitor.................................................................................................................................................................................11
100Base-TX ......................................................................................................................................................................................11
Transmit Function........................................................................................................................................................................11
Parallel to Serial, NRZ to NRZI, and MLT3 Conversion....................................................................................................12
Receive Function .........................................................................................................................................................................12
Baseline Wander Compensation ...............................................................................................................................................12
Clock/Data Recovery ..................................................................................................................................................................12
Decoder/De-scrambler ................................................................................................................................................................13
Link Monitor.................................................................................................................................................................................13
100Base-FX......................................................................................................................................................................................13
Transmit Function........................................................................................................................................................................13
Receive Function .........................................................................................................................................................................13
Link Monitor.................................................................................................................................................................................13
Far-End-Fault-Indication (FEFI)...............................................................................................................................................13
10Base-T/100Base-TF/FX .............................................................................................................................................................14
Multi-Mode Transmit Driver .....................................................................................................................................................14
Adaptive Equalizer ......................................................................................................................................................................14
PLL Clock Synthesizer ...............................................................................................................................................................14
Jabber and SQE (Heartbeat).......................................................................................................................................................14
Reverse Polarity Detection and Correction .............................................................................................................................14
Initialization and Setup ................................................................................................................................................................. 15
Hardware Configuration................................................................................................................................................................15
Software Configuration ..................................................................................................................................................................15
LEDs ..............................................................................................................................................................................................15
Auto-Negotiation .............................................................................................................................................................................15
Parallel Detection ...........................................................................................................................................................................16
Diagnostics.......................................................................................................................................................................................16
Loopback Operation ....................................................................................................................................................................16
Cable Length Indicator ...............................................................................................................................................................16
Reset and Power............................................................................................................................................................................. 16
Clock ................................................................................................................................................................................................ 17
Register Descriptions .................................................................................................................................................................... 18