User`s guide

Signal-to-Connector Mapping
The following figure shows the pin numbers and microprocessor signals for
the preprocessor interface pin-grid-array socket.
1 2 3 4 56789 10 11 12
A 50 51 54 57 6165697376 80 82 83
N/C FC1 ~BERR D14 VDD D7 D4 VDD IRQ4 ~IACK4 PB7 N/C
B 49 48 52 58 6266687278 79 81 84
FC2 ~RESET FC0 D13 D10 D6 D5 D1 ~IACK7 GND ~IACK1 PB6
C 47 46 53 55 5963717577 86 85 87
~HALT GND ~DTACK GND D12 D9 D2 IRQ7 IRQ1 PB4 PB5 PB3
D 43 45 44 56 6064707489 88 91 90
EXTAL CLKOUT XTAL D15 D11 D8 D3 D0 PB2 GND PB0 PB1
E 40 39 42 41 GP7 GP8 67 GP6 93 92 95 94
VDD ~BGACK ~BR ~BG GND GND GND GND PA6 PA7 PA5 VDD
F 36 35 38 37 34 GP9 GP4 GP5 97 96 99 98
~UDS ~LDS ~AS R/~W GND GND GND GND PA3 PA4 PA1 PA2
G 32 33 30 31 GPB GPA GP3 100 103 104 101 102
~LW ~UW ~DRAMW ~OE GND GND GND GND X2 IP2 PA0 X1
H 28 29 26 27 GPC 1 GP2 GP1 107 108 105 106
VDD ~RAS1 ~CAS1 ~RAS0 GND GND GND GND RXDA TXDA OP3 VDD
J 24 25 22 23 8 4 130 126 122 110 111 109
~CS0 ~CAS0 GND ~CS1 A6 A9 A14 A17 TDO TXDB IP0 RXDB
K 21 19 20 11 9 5 129 125 121 119 112 113
~CS2 A20 ~CS3 A3 A5 A8 A15 A18 GND TMS GND IP1
L 18 15 13 12 6 2 132 128 124 118 114 115
A21 A23 GND A2 A7 A11 A12 A16 A19 TCK OP0 OP1
M 17 16 14 10 7 3 131 127 123 120 117 116
N/C A22 A1 A4 VDD A10 A13 VDD AMODE TDI ~TRST N/C
Notation: ~ indicates signal is active low.
PGA Pin Assignments
Preprocessor Interface Hardware Reference
Signal-to-Connector Mapping
MC68306 Preprocessor 3–5