S3C44B0X Samsung, S3C44B0X Datasheet - Page 266
Manufacturer Part Number
Specifications of S3C44B0X
S3C2400 RISC MICROPROCESSOR
The S3C2400 UART (Universal Asynchronous Receiver and Transmitter) unit provides two independent asynchronous
serial I/O (SIO) ports, each of which can operate in interrupt-based or DMA-based mode. In other words, UART can
generate an interrupt or DMA request to transfer data between CPU and UART. It can support bit rates of up to
115.2K bps. Each UART channel contains two 16-byte FIFOs for receive and transmit.
The S3C2400 UART includes programmable baud-rates, infra-red (IR) transmit/receive, one or two stop bit insertion,
5-bit, 6-bit, 7-bit or 8-bit data width and parity checking.
Each UART contains a baud-rate generator, transmitter, receiver and control unit, as shown in Figure11-1. The baud-
rate generator can be clocked by PCLK. The transmitter and the receiver contain 16-byte FIFOs and data shifters.
Data, which is to be transmitted, is written to FIFO and then copied to the transmit shifter. It is then shifted out by
the transmit data pin (TxDn). The received data is shifted from the receive data pin (RxDn), and then copied to FIFO
from the shifter.
— RxD0,TxD0,RxD1,TxD1 with DMA-based or interrupt-based operation
— UART Ch 0 with IrDA 1.0 & 16-byte FIFO
— UART Ch 1 with IrDA 1.0 & 16-byte FIFO
— Supports handshake transmit / receive