W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 58

• Manufacturer Part Number: W90220F
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

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.
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Bits 0-7 Receiver Data
Transmitter Holding Register (THR)
Port address : 0xf00002f8, DLAB=0 (COM1)
Bits 0-7 Transmit Data
Interrupt Enable Register (IER)
Port address : 0xf00003f9, DLAB=0 (COM1)
Bit 4
Bit 5
Bits 6
0
0
0
Reading this register, COM port returns 8-bit data receiving from SDI pin.
Writing to this register, COM port will sent out the data through SDO pin (THR[7] first).
MODEM Status Interrupt (Irpt_MOS) Enable
Receiver Line Status Interrupt (Irpt_RLS) Enable
Transmitter Holding Register Empty Interrupt (Irpt_THRE) Enable
0 = Mask Irpt_MOS
1 = Enable Irpt_MOS
0 = Mask Irpt_RLS
1 = Enable Irpt_RLS
0xf00002f8, DLAB=0 (COM2)
0xf00002f9, DLAB=0 (COM2)
1
1
1
2
2
2
8-bit Transmit Data
8-bit Receiver Data
3
3
3
MOS_Ien RLS_Ien THRE_Ien RDA_Ien
4
4
4
Write only
Read/Write
5
5
5
Power-on Default : --
Power-on Default : 0x0
6
6
6
7
7
7
W90220F
Version 0.84