Ebyte E10 Series, User Manual, Page: 12 / 14

SI4463 wireless module E10 series user manual
Copyright ©2012–2017，Chengdu Ebyte Electronic Technology Co.,Ltd.
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3.3. E10-433MS1W
4. Notes

GPIO0 \ GPIO1 \ GPIO2 \ GPIO3 is general I/O，available for various functions. Please refer to SI4463 datasheet, they can be floated when free。
 IRQ can be unconnected，the interrupt status can be acquired via SPI check mode, but it is recommended to connect with external MCU.

Make it ground well with large space for grounding and small power ripple. Filter capacitor is necessary and make sure it is close to pin VCC and
GND.
 Air data rate for SPI shall not be too high，1Mbps is recommended.

Please refer to “Operating Modes and Timing” for status switch of SI4463，the switch between TX and RX must go through Ready，cannot be
switched directly.

One can reinitialize register setting when IC is free for better stability.

For external control of GPIO2 , GPIO3，status is as below：
When transmitting：GPIO2 = 0; GPIO3 = 1;
When receiving：GPIO2 = 1; GPIO3 = 0;
To control via SI4463, in the program initialization one can set pins as below:
SI44XX_GPIO_CONFIG( 0, 0, 32|0x40, 33|0x40, 0, 0, 0 );