MC68HC908GT16_07 FREESCALE [Freescale Semiconductor, Inc], MC68HC908GT16_07 Datasheet - Page 174

• Manufacturer Part Number: MC68HC908GT16_07
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Enhanced Serial Communications Interface (ESCI) Module
Use the following formula to calculate the ESCI baud rate:
where:
Table 14-11
174
f
BPD = Baud rate register prescaler divisor
BD
PD
PDFA = Prescaler divisor fine adjust
Bus
= Bus frequency
= Baud rate divisor
= Prescaler divisor
shows the ESCI baud rates that can be generated with a 4.9152-MHz bus frequency.
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
Table 14-10. ESCI Prescaler Divisor Fine Adjust (Continued)
PSSB[4:3:2:1:0]
Baud rate
0 1 1 1 1
1 0 0 0 0
1 0 0 0 1
1 0 0 1 0
1 0 0 1 1
1 0 1 0 0
1 0 1 0 1
1 0 1 1 0
1 0 1 1 1
1 1 0 0 0
1 1 0 0 1
1 1 0 1 0
1 1 0 1 1
1 1 1 0 0
1 1 1 0 1
1 1 1 1 0
1 1 1 1 1
=
----------------------------------------------------------------------------------- -
64
×
BPD BD
15/32 = 0.46875
16/32 = 0.5
17/32 = 0.53125
18/32 = 0.5625
19/32 = 0.59375
20/32 = 0.625
21/32 = 0.65625
22/32 = 0.6875
23/32 = 0.71875
24/32 = 0.75
25/32 = 0.78125
26/32 = 0.8125
27/32 = 0.84375
28/32 = 0.875
29/32 = 0.90625
30/32 = 0.9375
31/32 = 0.96875
Prescaler Divisor Fine Adjust (PDFA)
×
f Bus
×
(
PD
+
PDFA
)
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