Renesas H8SX/1520 Series Hardware Manual page 681

Error Response
• Error response, H'BF, (one byte): Error response to selection of new bit rate
• ERROR: (one byte): Error code
(4)
Receive Data Check
The methods for checking of receive data are listed below.
1. Input frequency
The received value of the input frequency is checked to ensure that it is within the range of
minimum to maximum frequencies which matches the clock modes of the specified device.
When the value is out of this range, an input-frequency error is generated.
2. Multiplication ratio
The received value of the multiplication ratio or division ratio is checked to ensure that it
matches the clock modes of the specified device. When the value is out of this range, an input-
frequency error is generated.
3. Operating frequency
Operating frequency is calculated from the received value of the input frequency and the
multiplication or division ratio. The input frequency is input to the LSI and the LSI is operated
at the operating frequency. The expression is given below.
Operating frequency = Input frequency × Multiplication ratio, or
Operating frequency = Input frequency ÷ Division ratio
The calculated operating frequency should be checked to ensure that it is within the range of
minimum to maximum frequencies which are available with the clock modes of the specified
device. When it is out of this range, an operating frequency error is generated.
4. Bit rate
Downloaded from Elcodis.com electronic components distributor
H'BF ERROR
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.
Section 17 Flash Memory (0.18-(m F-ZTAT Version)
Rev. 3.00 Mar. 14, 2006 Page 643 of 804
REJ09B0104-0300