MSR3 RADIOMETRIX [Radiometrix Ltd], MSR3 Datasheet - Page 3

• Manufacturer Part Number: MSR3
• Description: NBFM Multi-channel receiver for 868MHz SRD band
• Manufacturer: RADIOMETRIX [Radiometrix Ltd]

Pin Description - MSR3
Notes:
Radiometrix Ltd, MSR3 Data Sheet
Figure 3: MSR3 Footprint (Top) view
Pin
1
2
3
4
5
6
7
8
9
1.
2.
3.
4.
5.
Name
RSSI
0V
Vcc
AF out
RXD
P0/PGM
P1
P2
P3
There is no pullup on the open collector RXD output.
P0-P3 are inverted parallel frequency select inputs. They have 10K pullups to 4.4v
P0 requires a logic level inverted RS232 data stream when used for programming
A version of the LMR2 firmware is used, so most variants of the LM_series will also be
possible for the MSR3
Two pinout versions are offered: With conventional pins, out of the bottom of the unit
With right-angle pins, to allow 'SIL' vertical mounting
The actual pinout and footprint follows the NRX1/2 type radio, with the addition of P0-P3
Open collector output of data slicer suitable for Biphase codes
Function
DC level between 0.5v and 2.5v. 60dB dynamic range
Ground
Supply input 4.5 - 15v
700mV p-p audio. DC coupled, approx 1v bias
Parallel Channel select LSB
Serial frequency programming / configuration
Parallel Channel select
Parallel Channel select
Parallel Channel select MSB
TBA
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