W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 63
W90220F
Manufacturer Part Number
W90220F
Description
Pa-risc Embedded Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W90220F.pdf
(79 pages)
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The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Winbond.
63
Bits 6-7 Word Length Select
Modem Control Register (MCR)
Port address : 0xf00003fc (COM1)
Bits 3
Bit 4
Bit 5
Bit 6
Bit 7
Writing 0x00 to MCR set DTR#, RTS#, OUT1# and OUT2# to logic 1s, while
writing 0x0f to MCR reset DTR#, RTS#, OUT1# and OUT2# to logic 0s.
0
Enable Loop-Back mode
Complement version of OUT2# (user-designated output) signal
Complement version of OUT1# (user-designated output) signal
Complement version of RTS# (Request-To-Send) signal
Complement version of DTR# (Data-Terminal-Ready) signal
0 = Disable
1 = When loop-back is enable, the following signals is connected internally.
Reserved
LCR[6:7]
0xf00002fc (COM2)
0 0
0 1
1 0
1 1
SOUT connects to SIN
DTR# connects to DSR# internally and DTR# pin is fixed logic 1.
RTS# connects to CTS# internally and RTS# pin is fixed logic 1.
OUT1# connects to RI#
OUT2# connects to DCD# internally and OUT2# pin is fixed logic 1.
1
2
Character length
5 bits
6 bits
7 bits
8 bits
LOOP
3
internally and OUT1# pin is fixed logic 1.
internally and SOUT pin is fixed logic 1.
Read/Write
OUT2#
4
OUT1#
Power-on Default : 0x0
5
RTS#
6
DTR#
7
W90220F
Version 0.84
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