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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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UM0851 Scheda tecnica(PDF) 86 Page - STMicroelectronics |
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UM0851 Scheda tecnica(HTML) 86 Page - STMicroelectronics |
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86 / 245 page  Communication device drivers UM0851 86/245 Doc ID 16604 Rev 2 4.5.7 Configuration options 4.5.8 References ● Linux-2.6.27/Documentation/i2c ● Linux-2.6.27/drivers/i2c/chips/ 4.6 SPI driver This section describes the driver for the SPI controller embedded in SPEAr. 4.6.1 Hardware overview The serial peripheral interface bus or SPI bus is a synchronous serial data link standard named by Motorola that operates in full duplex mode. Devices communicate in master/slave mode where the master device initiates the data frame. Individual slave select (chip select) lines allow multiple slave devices. SPI is used to connect microcontrollers to sensors, memory and peripherals. Figure 21. Master slave connectivity Table 28. I2C configuration options Configuration option Comment CONFIG_I2C Enables I2C support. CONFIG_I2C_CHARDEV Enables I2C device interface. CONFIG_I2C_SPEAR Enables SPEAr I2C hardware bus support. |
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