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參數資料
型號: W90221F
廠商: WINBOND ELECTRONICS CORP
英文描述: PA-RISC Embedded Micro-Controller(惠普PA-RISC結構的32位嵌入式微控制器)
中文描述: PA - RISC的嵌入式微控制器(惠普的PA - RISC結構的32位嵌入式微控制器)
文件頁數: 123/174頁
文件大小: 2102K
代理商: W90221F
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The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed, distributed or reproduced without permission from Winbond.
123
Versi on 0. 4, March/2000
0 1
1 0
1 1
6 bits
7 bits
8 bits
Modem Control Register (MCR)
Port address : 0xf00003fc (COM0)
0xf00002fc (COM1)
Read/Write
Power-on Default : 0x0
0
1
2
3
4
5
6
7
Reserved
LOOP
OUT2#
OUT1#
RTS#
DTR#
Bits 3 Enable Loop-Back mode
0 = Disable
1 = When loop-back is enable, the following signals is connected internally.
SOUT
connects to
SIN
internally and SOUT pin is fixed logic 1.
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#
internally and OUT1# pin is fixed logic 1.
OUT2#
connects to
DCD#
internally and OUT2# pin is fixed logic 1.
Bit 4
Complement version of OUT2# (user-designated output) signal
Bit 5
Complement version of OUT1# (user-designated output) signal
Bit 6
Complement version of RTS# (Request-To-Send) signal
Bit 7
Complement version of DTR# (Data-Terminal-Ready) signal
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.
Line Status Register (LSR)
Port address : 0xf00003fd (COM0)
0xf00002fd (COM1)
Read only
Power-on Default : ---
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