W5100 datasheet(64/72 Pages) WIZNET

Part #	W5100

Description	Single-chip Internet-enabled 10/100 Ethernet Controller

PDF	72 Pages

Scroll/Zoom	100%

Manufacturer	WIZNET [WIZnet Co., Ltd]

Direct Link	https://www.wiznet.io/ko/Product/

Logo

64 / 72 page

6.3.3 Process of using general SPI Master device

(According to SPI protocol)

1. Configure Input/Output direction on SPI Master device pins.

* /SS (Slave Select) : Output pin

* SCLK (Serial Clock) : Output pin

* MOSI (Master Out Slave In) : Output pin

* MISO (Master In Slave Out) : Input pin

2. Configure /SS as ‘High’

3. Configure the registers on SPI Master device.

* SPI Enable bit on SPCR register (SPI Control Register)

* Master/Slave select bit on SPCR register

* SPI Mode bit on SPCR register

* SPI data rate bit on SPCR register and SPSR register (SPI State Register)

4. Write desired value for transmission on SPDR register (SPI Data Register).

5. Configure /SS as ‘Low’ (data transfer start)

6. Wait for reception complete

7. If all data transmission ends, configure /SS as ‘High’

W5100 Datasheet(PDF) 64 Page - WIZnet Co., Ltd