Cirrus-logic CS1631 Instrukcja Użytkownika Pobierz pdf (Strona 32)

CS1630/31

32 DS954F3

6.8 Configuration 3 (Config3) – Address 35

76543210

STRING TT_MAX1 TT_MAX0 LED_ARG IPEAK2 IPEAK1 IPEAK0 -

Number Name Description

[7] STRING

Configures second stage series/parallel output channel configuration.

0 = Second stage configured as parallel strings

1 = Second stage configured with strings in series

[6:5] TT_MAX[1:0]

Configures the maximum measurable second stage switching cycle period.

00 = 51.15s

01 = 102.35s

10 = 153.55s

11 = 204.75s

[4] LED_ARG

Configures which channel is connected to the color LED string (the string with a

gain that is dependent on dim and temperature).

0 = Color LED string connected to channel 1

1 = Color LED string connected to channel 2

[3:1] IPEAK[2:0]

Configures the minimum measurable peak current level on the second stage

sense resistor when the gate drive is turned on along with the CLAMP[1:0] set-

ting. IPEAK[2:0] is an unsigned integer in the range of 0value7. The voltage

on the FBSENSE pin that corresponds to the minimum peak current is calcu-

lated using the following formula:

[0] - Reserved

1.4

IPEAK[2:0] 1+1615+CLAMP[1:0] 8– 8 +

512

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Cirrus-logic CS1631 Instrukcja Użytkownika Strona 32