Intel C2518 FH8065501516710 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

Datasheet, Vol. 2 of 3

September 2014

460

Order Number: 330061-002US

The serial port consists of a UART which supports a subset of functions of the 16550 

industry standard.

The UART performs serial-to-parallel conversion on the data characters received from a 

peripheral device and parallel-to-serial conversion on the data characters received from 

the processor. The processor reads the complete status of the UART at any time during 

the functional operation. Available status information includes the type and condition of 

the transfer operations being performed by the UART and any error conditions.

The serial port operates in either FIFO or non-FIFO mode. In FIFO mode, a 16-byte 

transmit FIFO holds data from the processor to be transmitted on the serial link and a 

16-byte receive FIFO buffers data from the serial link until read by the processor.

The UART includes a programmable baud rate generator which can generate a baud 

rate between 50 bps and 115,200 bps from a fixed baud clock input of 1.8432 MHz. 

The baud rate calculation is:

The divisor is defined by the Divisor Latch LSB (DLL) and Divisor Latch MSB (DLM) 

registers of the UART registers in the I/O space. Some common values are shown in 

.

The UART has interrupt support, and those interrupts are programmed to the user 

requirements, minimizing the computing required to handle the communications link. 

Each UART operates in a polled or an interrupt-driven environment as configured by the 

software.

BaudRate

1.8432

6

10

16 Divisor



-----------------------

=

115,200

1

1h

0h

57,600

2

2h

0h

38,400

3

3h

0h

19,200

6

6h

0h

9,600

12

Ch

0h

4,800

24

18h

0h

2,400

48

30h

0h

1,200

96

60h

0h

300

384

80h

1h

50

2,304

0h

9h