Continental Automotive Systems Corporation 5WY8230 User Manual
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3.2. Duty control for PDWN
The Receiver power supplied by duty periodical control with the processor output port as PDWN_SMD /
PDWN_KFSK
Corresponding receivers required the input level voltage as below
Main power duty supply control for KOR-baby (as port PDWN_SMD)
(Power supply voltage Vs=5V, 1%)
Parameter
Min
Typ
Max
Unit
Remark
1
KOR (receiver OFF)
0
0.8
V
2
KOR (receiver ON)
2.8
Vs
V
3.3. Modulation selection for MSEL
The function is available to use only for SMD-receiver/ KOR-baby board, required for the modulation selection
with the processor output port as MSEL.
Parameter
Min
Typ
Max
Unit
Remark
1
MSEL for ASK modulation
1.4
4
V
2
MSEL for FSK modulation
0
0.2
V
Note) Hardware reserved the fixed resistor to short the MSEL port to the ground in order to prevent the case of
floating leakage.
3.4. RSSI (received signal strength indicator) for Range reduction
The function is available to use only for SMD KOR-baby board, required for the RSSI range reduction with the
processor output port as RSSI.
This pin provides a signal related to the input level of the received signal. This received field strength information
can be used to support range reduction. Range is reduced by pulling the RSSI port to VCC via a series resistor
R.
RSSI Output Electrical Characteristics with Ext load resister 390k 5%
Parameter
Min
Typ
Max
Unit
Remark
1
V
RSSI
0.8
2.8
V
2
I
RSSI
400
1400
µA
3
I
RSSi
(leakage)
2000
nA
In order to appalling of range reduction function with RSSI signal properly should be implemented carefully with
a given detail RSSI characteristic including temp curve form provided the device receiver.