Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

Product codes
ATSAM4S-WPIR-RD
Page of 1231
631
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
Figure 32-15. Receive Frame Format in Continuous Mode 
Note:
1. STTDLY is set to 0.
32.7.8 Loop Mode
The receiver can be programmed to receive transmissions from the transmitter. This is done by setting the Loop 
Mode (LOOP) bit in SSC_RFMR. In this case, RD is connected to TD, RF is connected to TF and RK is connected 
to TK.
32.7.9 Interrupt
Most bits in SSC_SR have a corresponding bit in interrupt management registers.
The SSC can be programmed to generate an interrupt when it detects an event. The interrupt is controlled by 
writing SSC_IER (Interrupt Enable Register) and SSC_IDR (Interrupt Disable Register) These registers enable 
and disable, respectively, the corresponding interrupt by setting and clearing the corresponding bit in SSC_IMR 
(Interrupt Mask Register), which controls the generation of interrupts by asserting the SSC interrupt line connected 
to the interrupt controller.
Figure 32-16. Interrupt Block Diagram
Data
DATLEN
 
Data
DATLEN
 
Start = Enable Receiver
To SSC_RHR
To SSC_RHR
RD
SSC_IMR
PDC
Interrupt 
Control
SSC Interrupt
Set
RXRDY
OVRUN
RXSYNC
Receiver
Transmitter
TXRDY
TXEMPTY
TXSYNC
TXBUFE
ENDTX
RXBUFF
ENDRX
Clear
SSC_IER
SSC_IDR