ks8701 Samsung Semiconductor, Inc., ks8701 Datasheet - Page 6

• Manufacturer Part Number: ks8701
• Description: Flextm Roaming Decoder Ii
• Manufacturer: Samsung Semiconductor, Inc.

KS8701
SYSTEM BLOCK DIAGRAM
limited (i.e. 1-bit digitized) 455 kHz or 140 kHz IF signal. In this mode, the KS8701 has 7 receiver control lines
used for warming up and shutting down a receiver in stages. The KS8701 has the ability to detect a low battery
signal during the receiver control sequences. It interfaces to a host MCU through a standard SPI. It has a 1minute
timer that offers low power support for a time of day function on the host.
CLKOUT signal can be programmed to be either a 38.4 kHz signal created by fractionally dividing the oscillator
clock, or a 40 kHz signal creating by dividing the oscillator clock by 4.
When configured to use the internal demodulator, the KS8701 connects to a receiver capable of generating a
When using the internal demodulator, the oscillator frequency (or external clock) must be 160 kHz. The
Low Battery
Detector
Receiver
Figure 1 : Example Block Diagram Using Internal Demodulator
S0/IFIN
Receiver
Control
LOBAT
Programming Control
INTRODUCTION
Synthesizer
FLEX
KS8701
TM
Roaming Decoder II
Microprocessor
38.4 or 40 kHz Clock
15pF
15pF
Host
Interface
User
Introduction
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