at43usb355 ATMEL Corporation, at43usb355 Datasheet - Page 53

• Manufacturer Part Number: at43usb355
• Description: At43usb355 Full-speed Usb Microcontroller With Embedded Hub, Adc And Pwm
• Manufacturer: ATMEL Corporation

Serial Peripheral
Interface (SPI)
Figure 18. SPI Block Diagram
2603G–USB–04/06
SPI Status Register
SELECT
4 16 64 128
SYSCLK
Divider
SPI Control
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between
the AT43USB355 and peripheral devices or between several AVR devices. The AT43USB355
SPI features include the following:
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Full-duplex, 3-wire Synchronous Data Transfer
Master or Slave Operation
LSB First or MSB First Data Transfer
Four Programmable Bit Rates
End of Transmission Interrupt Flag
Write Collision Flag Protection
Wakeup from Idle Mode (Slave Mode Only)
SPI Interrupt
SPI Clock (Master)
Request
MSTR
SPE
8
Data Bus
MSB
Internal
8
8-bit Shift Register
Read Data Buffer
8
SPI Control Register
Clock
Logic
LSB
Clock
S
M
M
S
M
S
AT43USB355
MISO
MOSI
SCK
PB6
PB5
PB7
PB4
SS
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