8.2.10 TT MCU Controller

Atari ST/TT/STe Custom Chips Pinout

TT Serie FMCU 84 Pin SMD (TT only)


 Pin          Signal       Typ      Beschreibung
 _______________________________________________________________________________

 1,5,9,11
 33,68,72
 77,81        Vss          Input    GND, Signalmasse

 3,7,12
 54,70,75
 79,83        Vdo          Input    +5V Versorgungsspannung

 2            MAD3         I/O      Multiplex Datenbus
 4            MAD2
 6            MAD1
 8            MAD1X
 10           MAD0
 13           MAD0X

 14-32        A0-A18                Adressleitungen CPU Bus

 34-46        A19-A31               Adressleitung A19-A31

 47-49        FC0-FC2

 50           SEL0
 52           SEL1
 52           M4X1

 55           R/W-         I/O      Read/Write, write negiert!
 56           DS-
 57           SIZ0
 58           SIZ1

 59           CLKIN        Input    16Mhz Takteinspeisung vom Mainboard

 60           AS-
 61           CBRQ-
 62           STERM-
 63           CBACK-

 64           CAS0-
 65           CAS1-
 66           CAS2-
 67           CAS3-

 69           RAS-
 71           WE-
 73           MAD10        I/O      Multiplex Datenbus
 74           MAD9
 76           MAD8
 68           MAD7
 80           MAD6
 82           MAD5
 84           MAD4

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Custom Chips (c) Atari Corp.
Technical Data: ST ServiceGuides