C8051F540-TB Silicon Laboratories Inc, C8051F540-TB Datasheet - Page 173

• Manufacturer Part Number: C8051F540-TB
• Description: BOARD PROTOTYPE W/C8051F540
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F540-TB

• Contents: Board
• Processor To Be Evaluated: C8051F54x
• Processor Series: C8051F54x
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: C8051F54x
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1672

19.2.4. Baud Rate Calculations—Automatic Mode
If the LIN controller is configured for slave mode, only the prescaler and divider need to be calculated:
The following example calculates the values of these variables for a 24 MHz system clock:
Table 19.3 presents some typical values of system clock and baud rate along with their factors.
SYSCLK
22.1184
11.0592
(MHz)
12.25
24.5
25
24
16
12
8
0
0
0
0
0
0
0
0
0
20 K
1
1
1
1
1
0
0
0
0
Table 19.2. Manual Baud Rate Parameters Examples
312
306
300
276
200
306
300
276
200
prescaler
0
0
0
0
0
0
0
0
0
prescaler
divider
divider
19.2 K
=
1
1
1
1
1
0
0
0
0
ln
=
=
325
319
312
288
208
319
312
288
208
24000000
------------------------- -
--------------------------------------------------------------------- -
2
4000000
=
---------------------------------------------
2


prescaler
ln
1
Rev. 1.1
24000000
+
SYSCLK
------------------------ -
Baud (bits/sec)
4000000
1
1
1
1
1
1
1
1
1
1
SYSCLK


9.6 K

20000
1
1
1
1
1
0
0
0
0
+
------- - 1
ln2
1
1


–
325
319
312
288
208
319
312
288
208

=
------- - 1
ln2
20000
1
=
300
1.585
–
3
3
3
3
3
3
3
3
3

4.8 K
1
1
1
1
1
0
0
0
0
1
325
319
312
288
208
319
312
288
208
C8051F54x
19
19
19
19
19
19
19
19
19
1 K
1
1
1
1
1
0
0
0
0
312
306
300
276
200
306
300
276
200
173