This is an old revision of the document!
Work in progress
Produced by Landis&Gyr Communications for Nortel. Landis&Gyr Communications was sold to IPM Group - who have gone bankrupt and renamed themselves to New IPMtel.
Pictures:
Serial communication protocol (600/8n1):
COIN VALIDATOR SLEEP MODE's' COIN VALIDATOR WAKE UP'g' CALC COIN VALIDATOR CHECKSUM'k' ACCEPT NEXT COIN'x' ACCEPT ALL VALID COINS'a' REJECT ALL COINS'z' COLLECT ESCROW'c' REFUND ESCROW'f' ESCROW NULL'n' LEARN ESCROW'l' <- Very important, they wont work together otherwise. REQUEST COIN STATUS'r' DISABLE SPECIFIED COIN'd' ENABLE SPECIFIED COIN'e' READ COIN VAL ADDR'q'
ROM can be dumped with q 0x0000 to 0xFFFF.
IC-markings:
[M] SC408664CB QQ1SSC-01 2C14H LLHA9408 QMV 492 AD1 P190 C 9430
the MCU is a custom-marked MC68HC05B6