8.2.14 TT Serie MCU

Atari TT MCU Controller
TT Serie MCU 144 Pin SMD (TT only)

 Pin          Signal       Typ      Beschreibung
 _______________________________________________________________________________

 1-17         A15-A31      I/O      Adressleitungen CPU Bus

 18           D10                   Datenleitung CPU Bus

 19,28,31,40
 53,62,65,77
 90,93,103
 115          Vcc          Input    +5V Versorgungsspannung

 20,29,30,41
 54,63,64,78
 91,92,104
 116,128      GND          Input    GND, Signamasse

 21           E

 22           MAD5         I/O      Multiplex Bus
 23           MAD0
 24           MAD6
 25           MAD1
 26           MAD7
 27           MAD2

 32           MAD8
 33           MAD3
 34           MAD9
 35           MAD4
 36           AS-
 37           KBCS
 38           RBSEL0
 39           RBSEL1

 42           BGI-
 43           BGO-
 44           FCCLK

 45-47        FC0-FC2

 48           CPMCS-
 49           CCS-
 50           CAS0-
 51           CAS1-
 52           CAS2-

 55           CAS3-
 56           FDDS

 57-61        D0-D4        I/O      Datenleitungen CPU Bus

 66-70        D5-D9                 Datenleitungen CPU Bus

 71           DS-
 72           DLTCH-
 73           DE
 74           SEL
 75           TEST
 76           FCS-

 79           GIDIR
 80           GIBC1
 81           SINT
 82           SIZ1
 83           SIZ0
 84           CLKX5
 85           CLK2                  Takt 2 Mhz
 86           CLK16                 Takt 16 Mhz
 87           CLK8                  Takt 8 Mhz
 88           LDS-
 89           LOAD-

 94           BNK5
 95           SRQ

 96           ROM1-
 97           ROM2-
 98           ROM3-
 99           ROM4-

 100          RTC-
 101          RASA-
 102          RASB-

 105          RESET-                Setzt den Chip in einen definierten
                                    Ausgangszustand
 106          HSYNC-
 107          VSYNC-
 108          SRDAT-
 109          SWDAT-
 110          SNDCS-
 111          SLOAD-
 112          RTCAS
 113          RTCDS
 114          UDS-

 117          VLTCH-
 118          VTLCH2-
 119          WE-
 120          BR-
 121          BGACK-      I/O       Bus Grand Aknowledge
 122          RDY
 123          RDAT-
 124          WDAT-
 125          CIIN-
 126          DSACK1-
 127          DSACK0-

 129          R/W-

 130-144      A0-A14      I/O       Adressleitungen CPU Bus

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