XC886/888CLM
Serial Interfaces
User’s Manual
12-12
V1.3, 2010-02
Serial Interfaces, V 1.0
occurs, the auto-reload action will be delayed until the first instruction cycle after setting
BCON.R.
Figure 12-3
Baud-rate Generator Circuitry
The baud rate (
f
BR
) value is dependent on the following parameters:
•
Input clock
f
PCLK
•
Prescaling factor (2
BRPRE
) defined by bit field BRPRE in register BCON
•
Fractional divider (STEP/256) defined by register FDSTEP
(to be considered only if fractional divider is enabled and operating in fractional
divider mode)
•
8-bit reload value (BR_VALUE) for the baud rate timer defined by register BG
FDSTEP
1
FDM
Adder
FDRES
FDEN&FDM
clk
Fractional Divider
Prescaler
NDOV
‘0’
FDEN
00
01
10
11
11
10
01
00
0
1
(overflow)
0
f
BR
8-Bit Baud Rate Timer
8-Bit Reload Value
R
0
1
f
DIV
f
DIV
f
PCLK
f
MOD
*
Содержание XC886CLM
Страница 1: ...User s Manual V1 3 2010 02 Microcontrollers 8 Bit XC886 888CLM 8 Bit Single Chip Microcontroller...
Страница 3: ...User s Manual V1 3 2010 02 Microcontrollers 8 Bit XC886 888CLM 8 Bit Single Chip Microcontroller...
Страница 324: ...XC886 888CLM Serial Interfaces User s Manual 12 52 V1 3 2010 02 Serial Interfaces V 1 0...
Страница 663: ...w w w i n f i n e o n c o m Published by Infineon Technologies AG...