===== The Din Sync Standard =====

<note important> The x0xb0x uses a different pinout on its sync connector!  Please see MidiAndSync for details </note>

The SYNC standard was developed by Roland as a way of syncronizing drum machines and sequencers.  It has 2 main signals, "clock" and "star/stop".  The signals are TTL compatible, so 0V is low, and +5V is high.  It uses a cable like midi, but its pinout is different:

^ Pin ^ Function ^
| 1   | Start/Stop |
| 2   | GND |
| 3   | Clock |
| 4   | Unused |
| 5   | Unused |


If the "Start/stop" line is low, the device is stopped, or should be stoped.  If it is high, then it should be started/running.

The Clock signal is either 24 pulses per quarter note, or 48 pulses per quarter note.  Most Roland gear is 24ppq, whereas most Korg gear is 48ppq.