Embedded Solutions Page 14
IP429II_BASE_REG1
$02 429 Control Register Port read/write
CONTROL REGISTER 1
DATA BIT
DESCRIPTION
7
/RESET4 reset, 1 = enabled
6
/RESET3
5
/RESET2
4
/RESET1
3
/DBCEN4 1 = force parity, 0 = normal
2
/DBCEN3
1
/DBCEN2
0
/DBCEN1
FIGURE 3
IP-429 CONTROL REGISTER 1 BIT MAP
/DBCENx is used to force Parity to be inserted into the data stream. This bit is normally
left programmed to 0. There is another control bit within the -3282 that also controls
Parity along with even or odd sense. It is recommended to use the 3282 control bit.
Default is 0.
/RESETx is used to reset the 3282 associated with each channel. The channel should
be reset when the 3282 control register is written to. [write only port]. Default is reset
[0]. 1 = normal operation. Reset should be asserted for 200 nS minimum.
The TX FIFO, bit counters, word counter, gap timers, /DRx, and TXR are affected by
reset assertion. The Control register is not.