TC1796
Peripheral Units (Vol. 2 of 2)
Asynchronous/Synchronous Serial Interface (ASC)
User’s Manual 19-27 V2.0, 2007-07
ASC, V2.0
The Baud Rate Timer Reload Register BG of the ASC module contains the 13-bit reload
value for the baud rate timer in Asynchronous Mode and Synchronous Mode.
The Fractional Divider Register FDV of the ASC module contains the 9-bit divider value
for the fractional divider (Asynchronous Mode only).
BG
Baud Rate Timer/Reload Register (14
H
) Reset Value: 0000 0000
H
31 13 12 0
0BR_VALUE
rrwh
Field Bits Type Description
BR_VALUE [12:0] rwh Baud Rate Timer/Reload Register Value
Reading BR_VALUE returns the 13-bit content of the
baud rate timer. Writing BR_VALUE loads the baud
rate timer reload register.
BG should only be written if CON.R = 0.
0 [31:13] r Reserved
Read as 0; should be written with 0.
FDV
Fractional Divider Register (18
H
) Reset Value: 0000 0000
H
31 9 8 0
0 FD_VALUE
rrw
Field Bits Type Description
FD_VALUE [8:0] rw Fractional Divider Register Value
FD_VALUE contains the 9-bit value n of the fractional
divider which determines the fractional divider ratio
n/512 (n = 0-511). With n = 0, the fractional divider is
switched off (divider ratio = 1).
0 [31:9] r Reserved
Read as 0; should be written with 0.
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