AT91FR4042 ATMEL Corporation, AT91FR4042 Datasheet - Page 15

• Manufacturer Part Number: AT91FR4042
• Description: The AT91FR4042 Features 256K Bytes of On-chip SRAM, 512K Bytes of Flash, an External Bus Interface, a 3-channel Timer/Counter, 2 Usarts, a Watchdog Timer And Advanced Power-saving Features.
• Manufacturer: ATMEL Corporation

Peripheral Data Controller
2648B–ATARM–12/02
The AT91FR4042 has a 4-channel PDC dedicated to the two on-chip USARTs. One
PDC channel is dedicated to the receiver and one to the transmitter of each USART.
The user interface of a PDC channel is integrated in the memory space of each USART.
It contains a 32-bit Address Pointer Register (RPR or TPR) and a 16-bit Transfer
Counter Register (RCR or TCR). When the programmed number of transfers are per-
formed, a status bit indicating the end of transfer is set in the USART Status Register
and an interrupt can be generated.
Preliminary
AT91FR4042
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