Servosila-SC-25-Datasheet

ENCODERS connector
The ENCODERS connector is intended for connecting absolute position encoders via digital interfaces. The
supported interfaces are SSI, BISS-C (unidirectional), SPI, Quadrature (single-ended), or PWM.
Note that SPI, Quadrature and PWM interfaces share pins. In contrast, the SSI/BISS-C interface comes with a
dedicated set of pins. This interface can be used together with other encoder interfaces such as SPI, PWM or
Quadrature. If two encoders are to be simultaneously connected to the same SC-25 controller, one of the encoders
must use SSI/BISS-C interface since the other interfaces share pins.
Schematics
Pins
Pin # Purpose Pin # Purpose
1 +5.0 (power output, fuse-protected) 2 +5.0 (power output, fuse-protected)
3 GND 4 GND
5 Quadrature “A” or SPI SOMI 6 SSI bus Clock-
7 Quadrature “B” or SPI CLK 8 SSI bus Clock+
9 Quadrature Index (“Z”) or SPI SS (Slave Select) or PWM
input
10 SSI bus Data+
11 SPI SIMO 12 SSI bus Data-
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