Peripheral Simulation

For Atmel AT91SAM7S256 — Peripheral Data Controller

Simulation support for this peripheral or feature is comprised of:

• Dialog boxes which display and allow you to change peripheral configuration.

These simulation capabilities are described below.

Peripheral Data Controller Dialog

The Peripheral Data Controller Dialog shows the current state of the on-chip Peripheral Data Controller. You may select the PDC from the list and change PDC settings using the controls in this dialog.

Selected PDC

• pdc_RPR (Transmit/Receive Pointer Register) contains the address of the next transfer.
• pdc_RNPR (Transmit/Receive Next Pointer Register) contains the address of the next buffer to use when the current buffer fills.
• pdc_RCR (Receive Counter Register) contains the number of transfers to be performed.
• pdc_RNCR (Transmit/Receive Next Counter Register) contains the size of the next buffer to be transferred.
• RTXEN/TXTEN (Transmitter/Receiver Enable) enables the transmitter or receiver for PDC transfers.
• RXTDIS/TXTDIS (Transmitter/Receiver Disable) disables the transmitter or receiver for PDC transfers.