TMP92CZ26A

92CZ26A-56

e) User program receive error
If either of the following error conditions occurs while a user program is being
received, the boo t pro gram stops operation.
If the record type is other than 00H, 01 H, or 02H
If a checksum error occurs
f) Measured frequency/baud rate error
When the boot program receives matching data, it measures the oscillation
frequency. If an error is within p lus or minus 3%, the boot progra m decides on that
frequency.
Each baud rate includes a setting error as shown in Table 3.4.13. For example,
in the case of 10.00 MHz /9600 bps, the baud rate is actually set at 9615.3 8 bps. To
establish comm unication, the sum of the baud r ate setting error and the m easured
frequency error must be within plus or minus 3 %.
Table 3.4.13 Baud Rate Setting Errors (%)
9600 bps 19200 bps 38400 bps 57600 bps 115200 bps
6.000 MHz 0.2 0.2 − − −
8.000 MHz 0.2 0.2 − − −
9.000 MHz 0.2 −0.7 − − −
10.000 MHz 0.2 0.2 −1.4 − −
−: Not supported