Example Of Setting Baud Rates And U-Timer Reload Values - Fujitsu FR60 Hardware Manual

CHAPTER 13 UART

13.5 Example of Setting Baud Rates and U-TIMER Reload Values

This section provides an example of setting baud rates and U-TIMER reload values.
■ Example of Setting Baud Rates and U-TIMER Reload Values
Table 13.5-1 shows setting values to be used in asynchronous (start-stop synchronization)
mode. Table 13.5-2 shows setting values to be used in CLK synchronous mode.
A frequency in the tables represents a peripheral machine clock frequency. UCC1 is a value to
be set in the UCC1 bit of the UTIMC register of the U-TIMER. A dash (-) in the tables means
that the baud rate cannot be used because the error exceeds plus minus 1%.
Table 13.5-1 Setting Values in Asynchronous (Start-Stop Synchronization) Mode
Baud rate
(bps)
1200
2400
4800
9600
19200
38400
57600
10400
31250
62500
Table 13.5-2 Setting Values in CLK Synchronous Mode
Baud rate
(bps)
250K
500K
1M
*: An error exceeding plus minus 1% occurs.
382
ms 34MHz
833.33 884(UCC1=1)
416.67 441(UCC1=1)
208.33 220(UCC1=1)
104.17 109(UCC1=1)
52.08 54(UCC1=1)
26.04 26(UCC1=1)
17.36 17(UCC1=1)
96.15 101(UCC1=0)
32.00 33(UCC1=0)
16.00 16(UCC1=0)
ms 34MHz
4.00 67(UCC1=0)
2.00 33(UCC1=0)
1.00 16(UCC1=0)
20MHz 17MHz
520(UCC1=0) 441(UCC1=1)
259(UCC1=1) 220(UCC1=0)
129(UCC1=0) 109(UCC1=0)
64(UCC1=0) 54(UCC1=1)
31(UCC1=1) 26(UCC1=1)
− −
− −
59(UCC1=0) 50(UCC1=0)
19(UCC1=0) 16(UCC1=0)
9(UCC1=0) 7(UCC1=1)
20MHz 17MHz
39(UCC1=0) 33(UCC1=0)
19(UCC1=0) 16(UCC1=1)
9(UCC1=0) 7(UCC1=0) *
10MHz
259(UCC1=1)
129(UCC1=0)
64(UCC1=0)
31(UCC1=1)
−
−
−
29(UCC1=0)
9(UCC1=0)
4(UCC1=0)
10MHz
19(UCC1=0)
9(UCC1=0)
4(UCC1=0)