LAPIS Semiconductor ML610421, Руководство пользователя, Страница: 184 / 437

ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 13 Synchronous Serial Port
13 – 4
13.2.2 Serial Port Transmit/Receive Buffers (SIO0BUFL, SIO0BUFH)
Address: 0F280H
Access: R/W
Access size: 8 bits/16 bits
Initial value: 00H
7 6 5 4 3 2 1 0
SIO0BUFL S0B7 S0B6 S0B5 S0B4 S0B3 S0B2 S0B1 S0B0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
Address: 0F281H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
SIO0BUFH S0B15 S0B14 S0B13 S0B12 S0B11 S0B10 S0B9 S0B8
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
SIO0BUFL and SIO0BUFH are special function registers (SFRs) to write transmit data and to read receive data of the
synchronous serial port.
When data is written in SIO0BUFL and SIO0BUFH, the data is written in the transmit registers (SIO0TRL and
SIO0TRH) and when data is read from SIO0BUFL and SIO0BUFH, the contents of the receive registers (SIO0RCL and
SIO0RCH) are read.