Macintosh 630 Family: External Pinouts

This article documents the external pinouts for the Macintosh 630 family of computers.

Serial Port Pinouts
Pin numberSignal description
1
Handshake output
2
Handshake input
3
Transmit data *
4
Ground
5
Receive data *
6
Transmit data +
7
General-purpose input
8
Receive data +
9
+5 volts



ADB connector
Pin numberNameDescription
1
ADBBidirectional data bus used for input and output. It is an open-collector signal pulled up to +5 volts through a 470-ohm resistor on the main logic board.
2
PSWPower-on signal that generates reset and interrupt key combinations
3
+5V+5 volts from the computer.
4
GNDGround from the computer.



SCSI Connector
Pin NumberSignal NameSingnal Description
8
/DB0Bit 0 of SCSI data bus
21
/DB1Bit 1 of SCSI data bus
22
/DB2Bit 2 of SCSI data bus
10
/DB3Bit 3 of SCSI data bus
23
/DB4Bit 4 of SCSI data bus
11
/DB5Bit 5 of SCSI data bus
12
/DB6Bit 6 of SCSI data bus
13
/DB7Bit 7 of SCSI data bus
20
/DBPParity bit of SCSI data bus
25
n.c.Not connected
25
TPWR+5 V terminator power
17
/ATNAttention
6
/BSYBus busy
5
/ACKHandshake acknowledge
4
/RSTBus reset
2
/MSGMessage phase
19
/SEL Select
15
/C/DControl or data
1
/REQHandshake request
3
/I/OInput or output
20, 22, 24, 28, 30, 34, and all odd pins except pin 25, 7, 9, 14, 16, 18, and 24GNDGround


Video connector
Pin numberSignal nameDescription
1
RED.GNDRed video ground
2
RED.VIDRed video signal
3
/CSYNCComposite synchronization signal
4
SENSE0Monitor sense signal 0
5
GRN.VIDGreen video signal
6
GRN.GND Green video ground
7
SENSE1Monitor sense signal 1
8
n.c.Not connected
9
BLU.VID Blue video signal
10
SENSE2Monitor sense signal 2
11
GNDCSYNC and VSYNC ground
12
/VSYNC Vertical synchronization signal
13
BLU.GNDBlue video ground
14
HSYNC.GNDHSYNC ground
15
/HSYNCHorizontal synchronization signal
ShellSGNDShield ground
Published Date: Feb 19, 2012