S3C3410X Datasheet, PDF (249/314 Pages) Samsung semiconductor – 16-Bit CMOS Microcontrollers

S3C3410X RISC MICROPROCESSOR
SIO
SIO DATA REGISTERS (SIODAT0, SIODAT1)
To send the data by SIO, users should write the data in the SIO data register (SIODAT0, SIODAT1) before
sending. As well as transmission, the received data can also be stored. Even if the receive operation can not be
controlled by S/W, the users should decide whether the received data is valid, or not. For example, this decision
can be made by the interrupt service routine. If users do not want the received data, users should think the data
in SIO data register as dummy one.
Register
SIODAT0
SIODAT1
Offset R/W
Address
Description
0x6002 R/W Synchronous I/O 0 data register
0x7002 R/W Synchronous I/O 1 data register
Reset
Value
0x0
0x0
SIODATx
SIODATA
Bit
Description
[7:0] SIO Data: The field represent the data to be transmitted or
received over the SIO channel.
Initial State
0x0
SIO BAUD RATE PRESCALER REGISTERS (SBRDR0, SBRDR1)
The value stored in the baud rate divisor register (SBRDR0, SBRDR1), allows users to determine the SIO clock
rate (baud rate) as follows:
Baud rate = CKIN / { 2 × ( divisor value + 1) }
Register
SBRDR0
SBRDR1
Offset R/W
Address
Description
0x6001 R/W Synchronous I/O 0 baud rate pre-scale register
0x7001 R/W Synchronous I/O 1 baud rate pre-scale register
Reset
Value
0x0
0x0
SIODATx
Pre-scale
Bit
Description
[7:0] The field has a pre-scale value for generating the baud rate.
Initial State
0x0
10-7