AS3677 datasheet(27/68 Pages) AMSCO

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AS3677

Datasheet - D e ta i l e d D e s c r i p t i o n

Table 32. Pattern control

Addr: 18h

Pattern control

This register controls the LED pattern

Bit

Bit Name

Default Access

Description

pattern_color

0R/W

Defines the pattern type for the current sinks

single 32 bit pattern (also set currX_mode = 11)

RGB pattern with each 10 bits (set all

currX_mode = 11)

2:1

pattern_delay

00b

R/W

Delay between pattern, details (see Table 35); together with

pattern_delay2 sets the delay time between patterns

softdim_pattern

R/W

Enable the ‘soft’ dimming feature for the pattern generator

Pattern generator directly control current

sources

‘Soft Dimming’ is performed (see page 24)

Table 33. Gpio current

Addr: 2Ch

Gpio current

Bit

Bit Name

Default Access

Description

pattern_delay2

0R/W

Delay between pattern (see Table 35 on page 26); together

with pattern_delay sets the delay time between patterns

pattern_slow

0R/W

Pattern timing control

normal mode

slow mode (all pattern times are increased by a

factor of eight)

Table 34. Pattern End

Addr: 54h

Pattern End

Bit

Bit Name

Default Access

Description

pattern_end

pattern_end is toggled from 0 to 1 (or from 1 to 0) at each

end of the pattern just before restarting of the internal

pattern generator at the first bit of the pattern data

(can be used to synchronize the baseband software to the

pattern generator)

1. pattern_end toggles whenever the AS3677 is in active mode (see Section 8.11 Operating Modes on page 58)

even if no pattern data has been setup.

Table 35. LED Pattern timing

pattern_slow

pattern_delay2 pattern_delay[1..0]

bit duration [ms]

delay [s]

between

patterns

pattern

duration [s]

(total cycle

time:

pattern +

delay)

delay between patterns

pattern_color=0 pattern_color=1

100

31100

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