Rainbow Electronics W90N740 - Manual (Page 134)

W90N740
- 130 -
RW_TC [23]: Read/Write terminal count output selection.
(This is for PCMCIA application in DMA mode, will be active during the final data transfer.)
If RW_TC [23]=0, output to nRTC.
If RW_TC [23]=1, output to nWTC.
SABNDERR [22]: Source address Boundary alignment Error flag
If TWS [13:12]=10, GDMA_SRCB [1:0] should be 00
If TWS [13:12]=01, GDMA_SRCB [0] should be 0
The address boundary alignment should be depended on TWS [13:12].
0 = the GDMA_SRCB is on the boundary alignment.
1 = the GDMA_SRCB not on the boundary alignment
The SABNDERR register bits just can be read only.
DABNDERR [21]: Destination address Boundary alignment Error flag
If TWS [13:12]=10, GDMA_DSTB [1:0] should be 00
If TWS [13:12]=01, GDMA_DSTB [0] should be 0
The address boundary alignment should be depended on TWS [13:12].
0 = the GDMA_DSTB is on the boundary alignment.
1 = the GDMA_DSTB not on the boundary alignment
The DABNDERR register bits just can be read only.
GDMATERR [20]: GDMA Transfer Error
O = No error occurs
1 = Hardware sets this bit on a GDMA transfer failure
Transfer error will generate GDMA interrupt
AUTOIEN [19]: Auto initialization Enable
0 = Disables auto initialization
1 = Enables auto initialization, the GDMA_CSRC0/1,GDMA_CDST0/1,and GDMA_CTCNT0/1 registers
are updated by the GDMA_SRC0/1,GDMA_DST0/1,and GDMA_TCNT0/1 registers automatically
when transfer is complete.
TC [18]: Terminal Count
0 = Channel does not expire
1 = Channel expires; this bit is set only by GDMA hardware, and clear by software to write logic 0.
TC [18] is the GDMA interrupt flag. TC [18] or GDMATERR[20] will generate interrupt