Functional Description

Operation

able (TE for the HT600/HT680 or D12~D15 for the HT6207, active high). This cycle will repeat itself

as long as the transmission enable (TE or D12~D15) is held high. Once the transmission enable falls

low, the encoder output completes its final cycle and then stops as shown below.

Information word

An information word consists of four periods as shown:

Address/data waveform

Each programmable address/data pin can be externally set to one of the following three logic states:

The ²Open² state data input is interpreted as logic low by the decoders since the decoder output only

have two states.

HT600/680/6207

6

April 24, 2000

3 w o r d s

3 w o r d s

E n c oder

Da t a O u t

T r ans m i t t ed

C ont i nuo us l y

< 1 w o r d

TE o r

D 12~ D 15

Transmission timing

P i l o t per i o d

(6 b i t s )

A ddr es s c ode per i od

D a t a c ode per i o d

1/ 6 bi t

S y nc . per i o d

Composition of information

"O n e "

" Z er o"

" O p en"

A ddr es s / D a t a B i t

f o sc ¸ 33

Address/Data bit waveform