HT13R90 datasheet(10/18 Pages) HOLTEK

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HT13R90

Rev. 1.10

July 10, 2007

LED2 Complementary Function

The LED2 output condition can be the same as the

LED1 output, but can also be setup to be the comple-

ment of the LED1 output. There is a configuration option

named L2CMP related to this setting.

If L2CMP is set to zero, the LED2 output will be the

same as the LED1 output. By utilising the other options

which have either an L2 or L1 header, both LED2 and

LED1 can be individually controlled.

If L2CMP is set to one, the LED2 output will be the com-

plement of the LED1 output. In this situation, only

L2ACT and L2OUT will have an effect on the LED2 out-

put. All other options with an L2 header will be ignored.

In the complement situation, when the LED2 output is in

its active state, then it will output the complementary

waveform. If LED2 is in its inactive state, then it will keep

its inactive state depending upon the L2ACT setting and

the condition of the LED1 waveform.

LED2 Complementary Timing Diagram for OMOD = 0,0

R E S E T

R u n n i n g S t a t e

A c t i v e

I n a c t i v e

K e e p I n a c t i v e

C o m p l e m e n t a r y t o L E D 1

L E D 1

( L 1 O U T = 0 1 , L 1 A C T = 1 )

L E D 0 ( O A C T = 1 )

L E D 1 ( O A C T = 0 )

L E D 2 ( L 2 C M P = 0 )

( L 2 O U T = 1 0 , L 2 A C T = 1 )

L E D 2 ( L 2 C M P = 1 )

( L 2 O U T = 1 0 , L 2 A C T = 1 )

L E D 2 ( L 2 C M P = 0 )

( L 2 O U T = 1 1 , L 2 A C T = 1 )

L E D 2 ( L 2 C M P = 1 )

( L 2 O U T = 1 1 , L 2 A C T = 1 )

C o m p l .

t o L E D 1

C o m p l .

t o L E D 1

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