Datasheet

ADuC7033
Rev. B | Page 113 of 140
UART Fractional Divider Register
Name: COMDIV2
Address: 0xFFFF072C
Default Value: 0x0000
Access: Read/write
Function: This 16-bit register controls the operation of the fractional divider for the ADuC7033.
Table 86. COMDIV2 MMR Bit Designations
Bit Name Description
15 FBEN Fractional Baud Rate Generator Enable Bit.
Set by the user to enable the fractional baud rate generator.
Cleared by the user to generate the baud rate using the standard 450 UART baud rate generator.
14 to 13 Reserved.
12 to 11 FBM[1:0]
M. If FBM = 0, M = 4. See Equation 2 for the calculation of the baud rate using a fractional divider
and Table 80 for common baud rate values.
10 to 0 FBN[10:0]
N. See Equation 2 for the calculation of the baud rate using a fractional divider and Table 80 for
common baud rate values.