Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
914
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
43.5
Pin Name List
43.6
Product Dependencies
43.6.1 I/O
Lines
The pins used for interfacing the compliant external devices may be multiplexed with PIO lines.
Before using the SSC receiver, the PIO controller must be configured to dedicate the SSC receiver I/O lines to the SSC
peripheral mode.
peripheral mode.
Before using the SSC transmitter, the PIO controller must be configured to dedicate the SSC transmitter I/O lines to the
SSC peripheral mode.
SSC peripheral mode.
43.6.2 Power
Management
The SSC is not continuously clocked. The SSC interface may be clocked through the Power Management Controller
(PMC), therefore the programmer must first configure the PMC to enable the SSC clock.
(PMC), therefore the programmer must first configure the PMC to enable the SSC clock.
43.6.3 Interrupt
The SSC interface has an interrupt line connected to the interrupt controller. Handling interrupts requires programming
the interrupt controller before configuring the SSC.
the interrupt controller before configuring the SSC.
All SSC interrupts can be enabled/disabled configuring the SSC Interrupt mask register. Each pending and unmasked
SSC interrupt will assert the SSC interrupt line. The SSC interrupt service routine can get the interrupt origin by reading
the SSC interrupt status register.
the SSC interrupt status register.
Table 43-1. I/O Lines Description
Pin Name
Pin Description
Type
RF
Receiver Frame Synchro
Input/Output
RK
Receiver Clock
Input/Output
RD
Receiver Data
Input
TF
Transmitter Frame Synchro
Input/Output
TK
Transmitter Clock
Input/Output
TD
Transmitter Data
Output
Table 43-2. I/O Lines
Instance
Signal
I/O Line
Peripheral
SSC
RD
PA27
B
SSC
RF
PA29
B
SSC
RK
PA28
B
SSC
TD
PA26
B
SSC
TF
PA25
B
SSC
TK
PA24
B
Table 43-3. Peripheral IDs
Instance
ID
SSC
28