AT91RM3400-AI-001 ATMEL [ATMEL Corporation], AT91RM3400-AI-001 Datasheet - Page 127
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AT91RM3400-AI-001
Manufacturer Part Number
AT91RM3400-AI-001
Description
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT91RM3400-AI-001.pdf
(461 pages)
- Current page: 127 of 461
- Download datasheet (6Mb)
Product Dependencies
I/O Lines
Interrupt
Oscillator and PLL
Characteristics
Peripheral Clocks
USB Clocks
1790A–ATARM–11/03
The Power Management Controller is capable of handling up to four Programmable
Clocks, PCK0 to PCK3.
A Programmable Clock is generally multiplexed on a PIO Controller. The user must first
program the PIO controllers to assign the pins of the Programmable Clock to its periph-
eral function.
The Power Management Controller has an interrupt line connected to the Advanced
Interrupt Controller (AIC). Handling the PMC interrupt requires programming the AIC
before configuring the PMC.
The electrical characteristics of the embedded oscillators and PLLs are product-depen-
dent, even if the way to control them is similar.
All of the parameters for both oscillators and the PLLs are given in the DC Characteris-
tics section of the product datasheet. These figures are used not only for the hardware
design, as they affect the external components to be connected to the pins, but also the
software configuration, as they determine the waiting time for the startup and lock times
to be programmed.
The Power Management Controller provides and controls up to thirty peripheral clocks.
The bit number permitting the control of a peripheral clock is the Peripheral ID of the
embedded peripheral.
When the Peripheral ID does not correspond to a peripheral, either because this is an
external interrupt or because there are less than thirty peripherals, the control bits of the
Peripheral ID are not implemented in the PMC and programming them has no effect on
the behavior of the PMC.
The Power Management Controller provides and controls two USB Clocks, the UHPCK
for the USB Host Port, and the UDPCK for the USB Device.
If the product does not embed the USB Host Port or the USB Device Port, the associ-
ated control bits and registers are not implemented in the PMC and programming them
has no effect on the behavior of the PMC.
AT91RM3400
127
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