AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 175

• Manufacturer Part Number: AT90USB1286-16MU
• Description: Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
• Manufacturer: ATMEL [ATMEL Corporation]

7593A–AVR–02/06
When the SPI is enabled, the data direction of the MOSI, MISO, SCK, and SS pins is overridden
according to
Functions” on page
Table 17-1.
Note:
The following code examples show how to initialize the SPI as a Master and how to perform a
simple transmission. DDR_SPI in the examples must be replaced by the actual Data Direction
Register controlling the SPI pins. DD_MOSI, DD_MISO and DD_SCK must be replaced by the
actual data direction bits for these pins. E.g. if MOSI is placed on pin PB5, replace DD_MOSI
with DDB5 and DDR_SPI with DDRB.
MOSI
MISO
SCK
Pin
SS
1. See
direction of the user defined SPI pins.
Table
Direction, Master SPI
User Defined
Input
User Defined
User Defined
SPI Pin Overrides
“Alternate Functions of Port B” on page 81
17-1. For more details on automatic port overrides, refer to
78.
(1)
Direction, Slave SPI
Input
User Defined
Input
Input
for a detailed description of how to define the
AT90USB64/128
“Alternate Port
175