CC-ACC-MMK-2443 Digi International, CC-ACC-MMK-2443 Datasheet - Page 44
CC-ACC-MMK-2443
Manufacturer Part Number
CC-ACC-MMK-2443
Description
MCU, MPU & DSP Development Tools CC9M 2443 Multimedia App Kit
Manufacturer
Digi International
Datasheet
1.CC-ACC-ADD-2443.pdf
(135 pages)
Specifications of CC-ACC-MMK-2443
Processor To Be Evaluated
S3C2443
Data Bus Width
32 bit
Interface Type
UART
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Clock output
CF/ATA
44
C h a p t e r 1
ConnectCore 9M 2443 Hardware Reference
(TCMPBn) has an initial value which is loaded into the compare register to be
compared with the down-counter value. This double buffering feature of TCNTBn and
TCMPBn makes the timer generate a stable output when the frequency and duty ratio
are changed.
Each timer has its own 16-bit down counter, which is driven by the timer clock. When
the down counter reaches zero, the timer interrupt request is generated to inform
the CPU that the timer operation has been completed. When the timer counter
reaches zero, the value of corresponding TCNTBn is automatically loaded into the
down counter to continue the next operation. However, if the timer stops, for
example, by clearing the timer enable bit of TCONn during the timer running mode,
the value of TCNTBn will not be reloaded into the counter.
The value of TCMPBn is used for pulse width modulation (PWM). The timer control
logic changes the output level when the down-counter value matches the value of the
compare register in the timer control logic. Therefore, the compare register
determines the turn-on time (or turn-off time) of a PWM output.
Features:
All of the Timer outputs are connected to the system connector.
At the global pins of the system connector there is a clock signal available
(BCLKOUT0), which is buffered by a clock buffer and can be chosen to be either MPLL
CLK, EPLL CLK, FCLK, HCLK, PCLK or DCLK. The source of this clock signal is the
CLKOUT0 port at the CPU, which can be programmed to different clocks, by the
CLKSEL0 register.
The following table shows the bits [6:4] of the CLKSEL0 register:
The single-slot CF controller consists of 2 parts - PC card controller & ATA controller.
They are multiplexing from or to PAD signals. Users can select either PC card or
True-IDE mode operation. Default mode is PC card mode. The CF controller has a
top level SFR with card power enable bit, output port enable bit & mode select
(True-IDE or PC card) bit.
CLKSELO [6.4]
CLKOUT0
Five 16-bit timers
Two 8-bit prescalers & Two 4-bit divider
Programmable duty control of output waveform (PWM)
Auto reload mode or one-shot pulse mode
Dead-zone generator
000
MPLL CLK
001
EPLL CLK
010
FCLK
011
HCLK
100
PCLK
101
DCLK0
11x
Reserved
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