AT91SAM_14 datasheet(38/50 Pages) ATMEL

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SAM7S Series [DATASHEET]

6175KS–ATARM–25-Oct-12

10.8 Serial Synchronous Controller

Provides serial synchronous communication links used in audio and telecom applications

Contains an independent receiver and transmitter and a common clock divider

Offers a configurable frame sync and data length

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

sync signal

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

10.9 Timer Counter

Three 16-bit Timer Counter Channels

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

channels connected to the PIO)

Wide range of functions including:

Frequency measurement

Event counting

Interval measurement

Pulse generation

Delay timing

Pulse Width Modulation

Up/down capabilities

Each channel is user-configurable and contains:

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

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

Two multi-purpose input/output signals

Two global registers that act on all three TC channels

10.10 PWM Controller

Four channels, one 16-bit counter per channel

Common clock generator, providing thirteen different clocks

One Modulo n counter providing eleven clocks

Two independent linear dividers working on modulo n counter outputs

Independent channel programming

Independent enable/disable commands

Independent clock selection

Independent period and duty cycle, with double buffering

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

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