RX610 Group
26. ROM (Flash Memory for Code Storage)
R01UH0032EJ0120 Rev.1.20
Page 889 of 1006
Feb 20, 2013
(11) New Bit Rate Selection
In response to a new bit rate selection command sent from the host, the RX610 checks if the on-chip SCI can be set to the
selected new bit rate. When the SCI can be set to the new bit rate, the RX610 returns a response (06h) and sets the SCI to
the new bit rate. If the SCI cannot be set to the new bit rate or the sent command is illegal, the RX610 returns an error
response (BFh). Upon reception of response 06h, the host waits for a one-bit period in the previous bit rate with which
the new bit rate selection command has been sent, and then sets the host's bit rate to the new one. After that, the host
sends confirmation data (06h) in the new bit rate, and the RX610 returns a response (06h) to the confirmation data.
Be sure to issue a new bit rate selection command only after a clock mode selection command.
Host
RX610
New bit rate selection command
Response (06h)
Confirmation (06h)
Response (06h)
Wait for
one-bit period
Set new
bit rate
Set new
bit rate
Figure 26.30 New Bit Rate Selection Sequence
Command
3Fh
Size
Bit rate
Input frequency
Clock type
count
Multiplication
ratio 1
Multiplication
ratio 2
SUM
Response
06h
Error response
BFh
Error
Confirmation
06h
Response
06h
Summary of Contents for RX600 Series
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