General Note

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notice or liability. All information is subject to TT Electronics’ own data and is

considered accurate at time of going to print.

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Rev C, 4/27/2023

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FlexSense® I-Series Programmable

Incremental Encoder

FS210/FS310 Datasheet

Table 9. CCFG Nibble Mapping

CCFG

Nibble

Aggregated

Photocurrent

‘b0000

A+

‘b0001

A-

‘b0010

B+

‘b0011

B-

‘b0100

Z+

‘b0101

Z-

All Others

Shunted to Ground

Throughout the remainder of this document, it is assumed that the FlexSense™ is mounted in a rotary encoder system, that

its PXC and CCFG registers have been populated to be consistent with the code wheel in that system, and that the code

wheel is rotating with constant angular velocity. The direction of rotation is a matter of convention. Given a PXC/CCFG

data pattern designed to produce A-leading-B quadrature-track outputs under clockwise code-wheel rotation and B-

leading-A outputs under counter-clockwise rotation, it is straightforward to modify the pattern to produce A-leading-B

outputs under counter-clockwise rotation and B-leading-A outputs under clockwise rotation. The illustrative figures below

assume that the combination of the PXC/CCFG data pattern and the direction of code-wheel rotation produces A-leading-B

quadrature-track output signals.