Sensoray 526 Bedienungsanleitung PDF herunterladen (Seite 26)

Counter Mode Register

0x16 – counter 0,

0x1E – counter 1,

0x26 – counter 2,

0x2E – counter 3.

Bits Type Default Description

[15] UU X Reserved.

[14] WO 0 Preload register select:

0 – writes to Preload Register directed to PR0;

1 – writes to Preload Register directed to PR1.

[13] WO 0 Output register latch control:

0 – latch on read (Note 1);

1 – latch on event (Note 2).

[12] WO 0 Count direction control:

0 – quadrature (dependent on CLKA-CLKB relative phase);

1 – software control.

[11] WO 0 Count direction if [12]=1, no effect if [12]=0:

0 – up;

1 – down.

[10:9] WO 00 Clock source:

If [12]=0:

00 – quadrature x1 (CLKA↑ counting up, CLKA↓ counting

down);

01 – quadrature x2 (both edges of CLKA);

1X – quadrature x4 (both edges of both CLKA and CLKB).

If [12]=1:

00 – CLKA↑;

01 – CLKA↓;

10 – internal clock;

11 – internal clock ÷ 2.

[8:7] WO 00 Count Enable control:

00 – count disabled;

01 – count enabled;

10 – hardware Count Enable (configured with [6:5]);

11 – hardware Count Enable (configured with [6:5]), inverted

polarity.

[6:5] WO 00 Hardware Count Enable source:

00 – CEN;

01 – INDEX;

10 – INDEX ↑ to ↓;

11 – NOT RCAP.

[4:2] WO 000 Auto load and reset RCAP (can be OR’ed):

[4] – INDEX↑;

[3] – INDEX↓;

[2] – RO.

[1] WO 0 COUT polarity:

0 – normal;

1 – inverted.

[0] WO 0 COUT source select:

0 – RCAP;

1 – RTGL.

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