TURBOchannel - Hardware

Hardware

TURBOchannel option modules uses a 96-pin DIN connector (specifically DIN 41612) and option modules mounted inline with the system module. Each option module can be a single-, double-, or triple-width. Although double and triple width options used more than one TURBOchannel connector, this does not mean that bandwidth was doubled or tripled as the slots are still sharing a single bus. Double- and triple-width option modules are used to mechanically accommodate larger option modules and for supplying more power. The mechanical specification for option modules was also flexible. There were few limitations for attaching daughterboards such SIMM modules (used in graphics options) and components could be mounted on both sides of the option module, with components on the bottom being restricted only in height to ensure that the option module could fit in the system module while maintaining enough airflow for cooling. An airflow of 150 LFMs is required above the option module and an airflow of 50 LFMs is required below the option module. Each slot has 44 signal pins, of which 32 are used for data and addressing.