W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 174
![no-image](/images/no-image-200.jpg)
W90221X
Manufacturer Part Number
W90221X
Description
Pa-risc Embedded Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W90221X.pdf
(220 pages)
- Current page: 174 of 220
- Download datasheet (3Mb)
the controller will be also
Bit 1 Reset TX-FIFO
automatically after 1 EXTCLK.
TX-FIFO is empty
Bit 2 Reset RX-FIFO
automatically after 1 EXTCLK.
RX-FIFO is empty
Bit 3-4 RX-FIFO threshold level
Bit 5-6 TX-FIFO threshold level
Bit 7 RX-FIFO interrupt enable
Bit 8 TX-FIFO interrupt enable
Bit 9 RX-FIFO overrun interrupt enable
W90221X version 0.6
0 = disable
1 = enable
This is a self-clear bit, ie. set this bit to 1, it will be clear to 0
This is a self-clear bit, ie. set this bit to 1, it will be clear to 0
0 = disable
1 = enable
0 = disable
1 = enable
When this bit is set, all registers will be set to its default value and
set to its initial states.
When this bit is set, The TX-FIFO pointer will be cleared to 0, the
immediately.
When this bit is set, The RX-FIFO pointer will be cleared to 0, the
immediately.
00 = RX-FIFO full
01 = 3/4 RX-FIFO
10 = 1/2 RX-FIFO
11 = RX-FIFO non-empty
00 = TX-FIFO empty
01 = 1/4 TX-FIFO
10 = 1/2 TX-FIFO
11 = TX-FIFO non-full
- 174 -
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