Rohm LAPIS SEMICONDUCTOR ML620Q503, User Manual

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ML620Q503/Q504 User's Manual
Chapter 11 Synchronous Serial Port (SSIO)
FEUL620Q504 11–3
11.2.2 Serial Port 0 Transmit/Receive Buffer (SIO0BUF)
Address: 0F700H
Access: R/W
Access size: 8/16 bits
Initial value: 0000H
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
15 14 13 12 11 10 9 8
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
SIO0BUF are special function registers (SFRs) to write transmit data and to read receive data of the synchronous
serial port 0.
When data is written in SIO0BUF, the data is written in the transmit registers (SIO0TRL and SIO0TRH) and when
data is read from SIO0BUF, the contents of the receive registers (SIO0RCL and SIO0RCH) are read.