Rainbow-electronics LM93 Bedienungsanleitung PDF herunterladen (Seite 68)

16.0 Registers (Continued)

16.8.11 Register C6h PROCHOT Override

Address

Read/

Write

Name

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Default

Value

C6h R/W

PROCHOT

Override

FORCE

_P1

FORCE

_P2

RES PHT_DC 00h

Bit Name R/W Description

3:0 PHT_DC R/W PROCHOT duty cycle select.

5:4 RES R Reserved

6 FORCE_P1 R/W When this is set by software, P1_PROCHOT will be asserted

by the LM93 with the duty cycle selected by PHT_DC.

7 FORCE_P2 R/W When this is set by software, P2_PROCHOT will be asserted

by the LM93 with the duty cycle selected by PHT_DC.

Note that if the P1P2_PROCHOT bit is set to short the Px_PROCHOT pins together, both Px_PROCHOT outputs will be driven

together, even if only one of the FORCE_Px bits is set.

The period of the PWM signal driven on Px_PROCHOT is 3.56 ms (80 internal 22.5 kHz clocks). The asserted time can be

increased in 5 clock increments. 5 clocks is about 220 µs and would represent 6.25% percent throttled.

Possible settings for PHT_DC:

PHT_DC Asserted Period

0h 5 clocks

1h 10 clocks

2h 15 clocks

3h 20 clocks

4h 25 clocks

5h 30 clocks

6h 35 clocks

7h 40 clocks

8h 45 clocks

9h 50 clocks

Ah 55 clocks

Bh 60 clocks

Ch 65 clocks

Dh 70 clocks

Eh 75 clocks

Fh 80 clocks

LM93

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