AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 420

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

32.6.8
32.6.9
32.7
Figure 32-15. Receive Frame Format in Continuous Mode
Note:
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.
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 writ-
ing 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 (Inter-
rupt Mask Register), which controls the generation of interrupts by asserting the SSC interrupt line connected to
the AIC.
Figure 32-16. Interrupt Block Diagram
SSC Application Examples
The SSC can support several serial communication modes used in audio or high speed serial links. Some standard
applications are shown in the following figures. All serial link applications supported by the SSC are not listed here.
Loop Mode
Interrupt
1. STTDLY is set to 0.
TXBUFE
ENDTX
RXBUFF
ENDRX
PDC
RD
Transmitter
Receiver
Start = Enable Receiver
TXEMPTY
RXSYNC
TXSYNC
OVRUN
To SSC_RHR
TXRDY
RXRDY
DATLEN
Data
SSC_IER
To SSC_RHR
Set
DATLEN
SSC_IMR
Data
Interrupt
Control
SSC_IDR
Clear
SAM7S Series [DATASHEET]
SSC Interrupt
6175M–ATARM–26-Oct-12
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