Pin |
Name |
Description |
1 |
PR +24V EXT |
Raw +24 V from AC adapter |
2 |
PR +24V EXT |
Raw +24 V from AC adapter |
3 |
/PLUG IN |
Power surge control (grounded in the expansion device) |
4 |
GND |
Logic ground |
7 |
/ON/OFF OUT |
On/off button |
9 |
/STERM |
Synchronous termination |
10 |
/DS |
Data strobe |
11 |
/AS |
Address strobe |
12 |
+5V MAIN OUT |
+5 V regulated power |
13 |
/HALT |
Halt |
14 |
/BERR |
Bus error |
15 |
/BGACK |
Bus grant acknowledge |
19 |
GND |
Logic ground |
20 |
GND |
Logic ground |
21 |
ADDR[0] |
Address bit 0 |
22 |
ADDR[2] |
Address bit 2 |
23 |
ADDR[4] |
Address bit 4 |
24 |
ADDR[6] |
Address bit 6 |
25 |
ADDR[8] |
Address bit 8 |
26 |
ADDR[10] |
Address bit 10 |
27 |
ADDR[12] |
Address bit 12 |
28 |
ADDR[14] |
Address bit 14 |
29 |
+5V MAIN OUT |
+5 V regulated power |
30 |
GND |
Logic ground |
31 |
ADDR[18] |
Address bit 18 |
32 |
ADDR[20] |
Address bit 20 |
33 |
ADDR[22] |
Address bit 22 |
34 |
ADDR[24] |
Address bit 24 |
35 |
ADDR[26] |
Address bit 26 |
36 |
ADDR[28] |
Address bit 28 |
37 |
ADDR[30] |
Address bit 30 |
38 |
GND |
Logic ground |
39 |
GND |
Logic ground |
40 |
IOCLK |
15.6672 MHz I/O clock |
41 |
SIZ[1] |
Transfer size bit 1 |
42 |
+5V MAIN OUT |
+5 V regulated power |
43 |
DATA[0] |
Data bit 0 |
44 |
DATA[1] |
Data bit 1 |
45 |
DATA[2] |
Data bit 2 |
46 |
DATA[3] |
Data bit 3 |
47 |
DATA[4] |
Data bit 4 |
48 |
DATA[5] |
Data bit 5 |
49 |
DATA[6] |
Data bit 6 |
50 |
DATA[7] |
Data bit 7 |
51 |
GND |
Logic ground |
52 |
DATA[17] |
Data bit 17 |
53 |
DATA[18] |
Data bit 18 |
54 |
DATA[19] |
Data bit 19 |
56 |
DATA[20] |
Data bit 20 |
57 |
DATA[21] |
Data bit 21 |
58 |
DATA[22] |
Data bit 22 |
59 |
DATA[23] |
Data bit 23 |
61 |
GND |
Logic ground |
62 |
/SCC IRQ |
SCC interrupt request |
63 |
SERVEE |
-5 V for SCC transceivers |
65 |
GND |
Logic ground |
66 |
GND |
Logic ground |
67 |
+8V SOUND |
Special "clean" +8 V power for sound output |
68 |
+5V MODEM |
+5 V power for modem |
69 |
LINET/R |
Modem DAA line talk/receive |
70 |
+5V SOUND |
+5 V power for sound output |
72 |
SND OUT L |
Sound output left channel |
73 |
EXT MIC FILT R |
Right input signal from external microphone |
74 |
EXT MIC FILT L |
Left input signal from external microphone |
75 |
DAA GND |
Modem ground |
76 |
DAA GND |
Modem ground |
77 |
PR +24V EXT |
Raw +24 V from AC adapter |
78 |
PR +24V EXT |
Raw +24 V from AC adapter |
79 |
PR +24V EXT |
Raw +24 V from AC adapter |
80 |
GND |
Logic ground |
81 |
GND |
Logic ground |
83 |
ADB DATA |
Apple Desktop Bus data |
84 |
/ADBPWRON |
ADB power-on key |
86 |
/CBREQ |
Cache burst request |
87 |
/DSACK1 |
Data size acknowledge bit 1 |
88 |
/DSACK0 |
Data size acknowledge bit 0 |
89 |
/BR |
Bus request |
90 |
/BG |
Bus grant |
91 |
/SLEEP |
Sleep-state signal |
92 |
FC[1] |
Function code bit 1 |
93 |
FC[0] |
Function code bit 0 |
94 |
/RMC |
Read-modify-write cycle |
95 |
CPUCLK |
CPU bus clock |
96 |
/CPURESET |
CPU reset (bus invalid) |
97 |
ADDR[1] |
Address bit 1 |
98 |
ADDR[3] |
Address bit 3 |
99 |
ADDR[5] |
Address bit 5 |
100 |
ADDR[7] |
Address bit 7 |
101 |
ADDR[9] |
Address bit 9 |
102 |
ADDR[11] |
Address bit 11 |
103 |
ADDR[13] |
Address bit 13 |
104 |
ADDR[15] |
Address bit 15 |
105 |
ADDR[16] |
Address bit 16 |
106 |
ADDR[17] |
Address bit 17 |
107 |
ADDR[19] |
Address bit 19 |
108 |
ADDR[21] |
Address bit 21 |
109 |
ADDR[23] |
Address bit 23 |
110 |
ADDR[25] |
Address bit 25 |
111 |
ADDR[27] |
Address bit 27 |
112 |
ADDR[29] |
Address bit 29 |
113 |
ADDR[31] |
Address bit 31 |
114 |
/SLOT IN |
Expansion device plugged in grounds pin |
115 |
GND |
Logic ground |
116 |
RD |
Read/Write |
117 |
SIZ[0] |
Transfer size bit 0 |
118 |
DATA[8] |
Data bit 8 |
119 |
DATA[9] |
Data bit 9 |
120 |
DATA[10] |
Data bit 10 |
121 |
DATA[11] |
Data bit 11 |
122 |
+5VEXTSENSE |
+5 V external sense |
123 |
DATA[12] |
Data bit 12 |
124 |
DATA[13] |
Data bit 13 |
125 |
DATA[14] |
Data bit 14 |
126 |
DATA[15] |
Data bit 15 |
127 |
DATA[16] |
Data bit 16 |
128 |
DATA[24] |
Data bit 24 |
129 |
DATA[25] |
Data bit 25 |
130 |
DATA[26] |
Data bit 26 |
131 |
DATA[27] |
Data bit 27 |
132 |
DATA[28] |
Data bit 28 |
133 |
DATA[29] |
Data bit 29 |
134 |
DATA[30] |
Data bit 30 |
135 |
DATA[31] |
Data bit 31 |
137 |
/SWIM CS |
SWIM chip select |
138 |
/SLOT E IRQ |
Pseudo-NuBus expansion slot E interrupt |
139 |
/PFW |
Power fail warning (shutdown bit) |
140 |
/IO RESET |
Reset output to I/O systems |
141 |
GND |
Logic ground |
142 |
GND |
Logic ground |
143 |
DAA CNTLF |
Modem DAA control |
144 |
DAA ID IN |
ID input from 152-pin connector to modem card |
145 |
/RING DET |
Ring detect signal from the modem DAA |
146 |
/RB DVR |
Modem relay B driver |
147 |
/RA DVR |
Modem relay A driver |
148 |
EXT MIC SEL |
External microphone plugged in |
151 |
DAA GND |
Modem ground |
152 |
DAA GND |
Modem ground |