Datasheet

SAM7S Series [DATASHEET]

6175KS–ATARM–25-Oct-12

10.8 Serial Synchronous Controller

z Provides serial synchronous communication links used in audio and telecom applications

z Contains an independent receiver and transmitter and a common clock divider

z Offers a configurable frame sync and data length

z Receiver and transmitter can be programmed to start automatically or on detection of different event on the frame

sync signal

z Receiver and transmitter include a data signal, a clock signal and a frame synchronization signal

10.9 Timer Counter

z Three 16-bit Timer Counter Channels

z Two output compare or one input capture per channel (except for SAM7S32/16 which have only two

channels connected to the PIO)

z Wide range of functions including:

z Frequency measurement

z Event counting

z Interval measurement

z Pulse generation

z Delay timing

z Pulse Width Modulation

z Up/down capabilities

z Each channel is user-configurable and contains:

z Three external clock inputs (The SAM7S32/16 have one)

z Five internal clock inputs, as defined in Table 10-5

z Two multi-purpose input/output signals

z Two global registers that act on all three TC channels

10.10 PWM Controller

z Four channels, one 16-bit counter per channel

z Common clock generator, providing thirteen different clocks

z One Modulo n counter providing eleven clocks

z Two independent linear dividers working on modulo n counter outputs

z Independent channel programming

z Independent enable/disable commands

z Independent clock selection

z Independent period and duty cycle, with double buffering

z Programmable selection of the output waveform polarity

Table 10-5. Timer Counter Clocks Assignment

TC Clock Input Clock

TIMER_CLOCK1 MCK/2

TIMER_CLOCK2 MCK/8

TIMER_CLOCK3 MCK/32

TIMER_CLOCK4 MCK/128

TIMER_CLOCK5 MCK/1024