Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
778
42023E–SAM–07/2013
ATSAM4L8/L4/L2
29.3
Block Diagram
Figure 29-1. IISC Block Diagram
29.4
I/O Lines Description
29.5
Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described
below.
below.
29.5.1
I/O lines
The IISC pins may be multiplexed with I/O Controller lines. The user must first program the I/O
Controller to assign the desired IISC pins to their peripheral function. If the IISC I/O lines are not
used by the application, they can be used for other purposes by the I/O Controller. It is required
to enable only the IISC inputs and outputs actually in use.
Controller to assign the desired IISC pins to their peripheral function. If the IISC I/O lines are not
used by the application, they can be used for other purposes by the I/O Controller. It is required
to enable only the IISC inputs and outputs actually in use.
29.5.2
Power Management
If the CPU enters a sleep mode that disables clocks used by the IISC, the IISC will stop function-
ing and resume operation after the system wakes up from sleep mode.
ing and resume operation after the system wakes up from sleep mode.
I/O Controller
ISCK
IWS
ISDI
ISDO
IMCK
Receiver
Clocks
Transmitter
Pe
ri
pher
a
l Bus in
terfa
c
e
Generic clock
PB
Peripheral
Bus Bridge
Interrupt
Controller
SCIF
Power
Manager
PB clock
IRQ
Peripheral
DMA
Controller
Rx
Tx
IISC
Table 29-1.
I/O Lines Description
Pin Name
Pin Description
Type
IMCK
Master Clock
Output
ISCK
Serial Clock
Input/Output
IWS
I
2
S Word Select
Input/Output
ISDI
Serial Data Input
Input
ISDO
Serial Data Output
Output