W90N745CD Datasheet, PDF (284/422 Pages) Winbond – 16/32-bit ARM microcontroller

W90N745CD/W90N745CDG
31
23
15
7
FMES
30
29
22
21
14
13
6
5
RFTLS
28
27
26
25
24
Reserved
20
19
18
17
16
Reserved
12
11
10
9
8
Reserved
4
3
2
1
0
DMS
IID
NIP
BITS
[31:8]
[7]
[6:5]
[4]
[3:1]
[0]
Reserved -
DESCRIPTIONS
FMES
FIFO Mode Enable Status
This bit indicates whether the FIFO mode is enabled or not. Since the
FIFO mode is always enable, this bit always shows the logical 1 when
CPU is reading this register.
RFTLS
RX FIFO Threshold Level Status
These bits show the current setting of receiver FIFO threshold level
(RTHO). The meaning of RTHO is defined in the following FCR
description.
DMS
DMA Mode Select
The DMA function is not implemented in this version. When reading IIR,
the DMS is always returned 0.
Interrupt Identification
IID
The IID together with NIP indicates the current interrupt request from
UART.
No Interrupt Pending
NIP
There is no pending interrupt.
Publication Release Date: September 22, 2006
- 279 -
Revision A2