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Pin Assignments and Functions

This section describes the pin assignments and pin functions.

Pin assignments

Module seen from the top

TimoTwo Radio Module Pinout

Pin functions

Pin Name Pin type Description
1 VSS Power Ground (0V)
2 IRQ Digital output Interrupt signal, active low
3 CS Digital input Chip select, active low
4 SCK Digital input SPI clock
5 MOSI Digital input SPI Master Out, Slave In
6 MISO Digital output SPI Master In, Slave Out
7 VSS Power Ground (0V)
8 DMX_TXD Digital output DMX TXD
9 VSS Power Ground (0V)
10 RS485_DE Digital output RS485 driver control signal
11 RS485_RE Digital output RS485 driver control signal
12 DMX_RXD Digital input DMX RXD (3.3 V max)
13 RDI_LVL0 Digital output Radio level LED
14 RDI_LVL1 Digital output Radio level LED
15 RDI_LVL2 Digital output Radio level LED
16 RDI_LVL3 Digital output Radio level LED
17 RDI_LVL4 Digital output Radio level LED
18 RDM Digital output RDM LED
19 DMX Digital output DMX LED
20 N.C. No connection Do not connect
21 N.C. No connection Do not connect
22 VSS Power Ground (0V)
23 VSS Power Ground (0V)
24 VSS Power Ground (0V)
25 VSS Power Ground (0V)
26 VSS Power Ground (0V)
27 VSS Power Ground (0V)
28 SCL Digital input/output I2C clock to RGB LED driver1
29 SDA Digital input/output I2C data to RGB LED driver1
30 VSS Power Ground (0V)
31 N.C No connection Do not connect
32 LINK_SW Digital input Link control switch input
33 STATUS_LED Digital output Status LED
34 LINKED Digital output Linked to transmitter LED
35 RF_LINK Digital output RF link LED
36 VDD Power Power supply (3.3V)
37 VSS Power Ground (0V)
ANT RF ANT RF Antenna connector

1 Shall be pulled high (to Vcc) through a 4.7 kOhm resister if RGB LED is used.

Typical Application Circuit

Typical Application Circuit