Device pin layout (Si4713-GM) and interfaces
Inteface pin descriptions
Pin Number(s)
Name
Description
1, 2, 20
NC
No connect, left floating.
3
RFGND
RF ground. Connected to ground
plane on PCB.
4
TXO
FM transmitter output connection
to Tx antenna.
5
RST
Device reset (active low) input.
6
SEN
Serial enable input (active low).
7
SCLK
Serial clock input.
8
SDIO
Serial data input/output.
9
RCLK
External reference oscillator input.
10
VIO
I/O supply voltage.
11
VDD
Supply voltage.
13
DIN
Digital input data.
14
DFS
Digital frame synchronisation.
15
RIN
Right audio line input.
16
LIN
Left audio line input.
17
GPO3/DCLK
General purpose output – Digital bit
synchronous clock.
RM-505; RM-506
FMTx 2.1 Technical Description
Issue 1
COMPANY CONFIDENTIAL
Page 6 –7
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