W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 164

• Manufacturer Part Number: W90221X
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

Bits 6-7
Modem Control Register (MCR)
Port address : 0xf00003fc (COM0)
Default : 0x0
Bits 3 Enable Loop-Back mode
Bit 4 Complement version of OUT2# (user-designated output) signal
W90221X version 0.6
0
Reserved
0 = One "stop bit" is generated in the transmitted data.
1 = One and a half "stop bit" is generated in the transmitted data
when 5-bit word length
selected.
0 = Disable
1 = When loop-back is enable, the following signals is connected
internally.
1.
1.
logic 1.
1.
logic 1.
LCR[6:7]
0 0
0 1
1 0
1 1
0xf00002fc (COM1)
1
is selected.
Two "stop bit" is generated when 6-, 7- and 8-bit word length is
SOUT connects to SIN
DTR# connects to DSR# internally and DTR# pin is fixed logic
RTS#
OUT1# connects to RI#
OUT2# connects to DCD# internally and OUT2# pin is fixed
Word Length Select
connects to CTS# internally and RTS#
2
Character length
5 bits
6 bits
7 bits
8 bits
LOOP OUT2# OUT1#
3
4
internally and OUT1# pin is fixed logic
internally and SOUT pin is fixed logic
Read/Write Power-on
5
RTS#
6
pin is fixed
DTR#
7
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