Datasheet

170
2545T–AVR–05/11
ATmega48/88/168
19.5.3 SPDR – SPI data register
The SPI Data Register is a read/write register used for data transfer between the Register File
and the SPI Shift Register. Writing to the register initiates data transmission. Reading the regis-
ter causes the Shift Register Receive buffer to be read.
Bit 76543210
0x2E (0x4E) MSB LSB SPDR
Read/write R/W R/W R/W R/W R/W R/W R/W R/W
Initial value XXXXXXXXUndefined