MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 604

• Manufacturer Part Number: MPC8544COMEDEV
• Description: KIT DEV EXPRESS MPC8544COM
• Manufacturer: Freescale Semiconductor
• Type: MPUr

Specifications of MPC8544COMEDEV

• Contents: Board
• For Use With/related Products: MPC8544
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DUART
Figure 13-5
Table 13-7
Table 13-8
target baud rates are also possible. Note that because only integer values can be used as divisors, the actual
baud rate differs slightly from the desired (target) baud rate; for this reason, both target and actual baud
rates are given, along with the percentage of error.
13-8
Bits
0–7
Offset 0x500
Reset
Name
UDLB Divisor least-significant byte. This is concatenated with UDMB.
W
Baud Rate
R
(Decimal)
shows examples of baud rate generation based on common input clock frequencies. Many other
describes the fields of UDLB registers.
115,200
230,400
115,200
230,400
Target
19,200
38,400
57,600
19,200
38,400
57,600
shows the bits in the UDLBs.
0x600
9,600
9,600
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
Figure 13-5. Divisor Least Significant Byte Registers (UDLB0, UDLB1)
0
Decimal
1736
2170
1085
868
434
289
145
543
362
181
72
90
Divisor
Table 13-7. UDLB Field Descriptions
Table 13-8. Baud Rate Examples
Hex
6C8
43D
1B2
87A
21F
16A
364
121
B5
5A
91
48
All zeros
UDLB
Description
Input Clock
Frequency
(CCB)
(MHz)
266
266
266
266
266
266
333
333
333
333
333
333
114,942.52844
231,481.48090
115,101.28913
231,481.48148
19,201.22888
38,402.45776
57,670.12673
19,201.22888
38,367.09638
57,550.64457
Baud Rate
9600.61444
9600.61444
(Decimal)
Actual
Freescale Semiconductor
Percent Error
Access: Read/Write
(Decimal)
0.0064
0.0064
0.0064
0.1217
0.2235
0.4694
0.0064
0.0064
0.0858
0.0857
0.0857
0.4694
7