Silan

Semiconductors

SC8521

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.3

2002.03.01

7

6. Pulse output

The bits of the remote control word, as indicated by the addressed ROM locations, are loaded into a shift

register every bit-time this register is shifted. The output is used to generate a logic1 in the biphase (Manchester)

coding, modulated with a frequency of 36 KHz. The duty factor of the modulation pulses may be selected

(optionally) to be 25% or 33.3%. The output of the pulse generator controls the output driver that can provide a

maximum current of 5 mA.

DR5

DR4

DR3

DR2

DR1

DR0

DR6

SN0

SN7

SN1

SN2

SN3

SN6

SN4

SN5

Scan timing.