3069RF-ZTAT Datasheet, PDF (678/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

 Multiplication ratio (1 byte) : The value of the multiplication ratio (e.g. when the clock
frequency is multiplied by four, the multiplication ratio will be H'04. With this LSI it
should be set to H'01.)
 Division ratio : The inverse of the division ratio, as a negative number (e.g. when the
clock frequency is divided by two, the value of division ratio will be H'FE. H'FE = D'-
2. With this LSI it should be set to H'01.)
 Multiplication ratio 2 (1 byte) : The value of multiplication or division ratios for the
peripheral frequency
 Multiplication ratio (1 byte) : The value of the multiplication ratio (e.g. when the clock
frequency is multiplied by four, the multiplication ratio will be H'04. Cannot be set for
this LSI.)
 Division ratio : The inverse of the division ratio, as a negative number (e.g. when the
clock is divided by two, the value of division ratio will be H'FE. H'FE = D'-2. With this
LSI it should be set to H'01.)
 SUM (1 byte) : Checksum
Response H'06
 Response, H'06, (1 byte) : Response to selection of a new bit rate
When it is possible to set the bit rate, the response will be ACK.
Error
response H'BF
ERROR
 Error response, H'BF, (1 byte) : Error response to selection of new bit rate
 ERROR : (1 byte) : Error code
H'11 : Sum checking error
H'24 : Bit-rate selection error
The rate is not available.
H'25 : Error in input frequency
This input frequency is not within the specified range.
H'26 : Multiplication-ratio error*
The ratio does not match an available ratio.
H'27 : Operating frequency error*
The frequency is not within the specified range.
Note: * This error does not occur with this LSI.
Rev. 5.0, 09/04, page 656 of 978