FS310 datasheet(19/40 Pages) TTELEC

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General Note

TT Electronics reserves the right to make changes in product specification without

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

considered accurate at time of going to print.

TT Electronics | OPTEK Technology

2900 E. Plano Parkway, St 200, Plano, TX 75074, USA | Ph: +1 972 323 2200

www.ttelectronics.com | sensors@ttelectronics.com

Rev C, 4/27/2023

Page 19

FlexSense® I-Series Programmable

Incremental Encoder

FS210/FS310 Datasheet

Index-Track Configuration Register (ZCFG: [0x0885]):

Table 12. ZCFG register definition

MSB

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

LSB

RSVD

TLNM (‘b1)

RSVD

SE_DZ

RSVD

ZGCTL

Table 13. ZCFG field description

Bits

Description

ZGCTL

Index-pulse gating control:

00: Ungated

ZOUT_P = 1 when Z+ aggregated photocurrent is greater than Z- aggregated

photocurrent, regardless of quadrature-track output condition

01: Gated by A ZOUT_P = 1 beginning at the first AOUT_P_DIG falling edge after Z+ aggregated

photocurrent becomes greater than Z- aggregated photocurrent and ending at the

next subsequent AOUT_P_DIG rising edge

10: Gated by B ZOUT_P = 1 beginning at the first BOUT_P_DIG falling edge after Z+ aggregated

photocurrent becomes greater than Z- aggregated photocurrent and ending at the

next subsequent BOUT_P_DIG rising edge

11: by A & B

ZOUT_P = 1 beginning at the first AOUT_P_DIG falling edge when BOUT_P_DIG = 0

or the first falling BOUT_P_DIG falling edge when AOUT_P_DIG = 0 after Z+

aggregated photocurrent becomes greater than Z- aggregated photocurrent and

ending at the next subsequent AOUT_P_DIG or BOUT_P_DIG rising edge

SE_DZ

Single-ended/differential output control:

0: Differential Device drives ZOUT_P, ZOUT_N to complementary logic levels

1: Single-ended Device places ZOUT_N in high-impedance state and only drives ZOUT_P

TLNM

Always set to ‘b1:

1: Low-Noise

Quad-track signal path has 3dB corner frequency limited to 400KHz

RSVD

Reserved for future use

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