XR19L220
修订版1.0.1
单通道集成UART和RS- 232收发器
4.5中断状态寄存器（ ISR ） - 只读....................................... ........................................... 22
4.5.1中断的产生： ........................................................................................................................................ 22
4.5.2中断的清除： ............................................................................................................................................. 22
T
ABLE
7: I
NTERRUPT
S
环境允许和
P
RIORITY
L
伊维尔基尼
....................................................................................................................... 23
4.6 FIFO控制寄存器（ FCR ） - 只写....................................... ................................................. 23
T
ABLE
8: T
RANSMIT和
R
ECEIVE
FIFO牛逼
索具
L
伊维尔基尼
S
选举
.............................................................................................. 24
4.7线控制寄存器（ LCR ） - 读/写....................................... ................................................. 24
T
ABLE
9: P
元数选择
.......................................................................................................................................................... 25
4.8调制解调器控制寄存器（ MCR ）或通用输出控制 - 读/写。
4.9线状态寄存器（ LSR ） - 只读........................................ .................................................. ....
4.10 MODEM状态寄存器（ MSR ） - 只读........................................ .............................................
4.11暂存寄存器（ SPR ） - 读/写........................................ ................................................
4.12波特率发生器寄存器（ DLL和DLM ） - 读/写.................................... .............
4.13设备识别寄存器（ DVID ） - 只读........................................ ...............................
4.14器件版本寄存器（ DREV ） - 只读........................................ .........................................
4.15增强功能寄存器（ EFR ） ........................................... .................................................. .......
26
27
28
28
29
29
29
29
T
ABLE
10: S
OFTWARE
F
低
C
ONTROL
F
受膏
........................................................................................................................ 29
4.16软件流控制寄存器（ XOFF1 ， XOFF2 ， XON1 ， XON2 ） - 只写................... 30
T
ABLE
11 ： UART复位条件的A和B通道........................................ .................................................. .. 31
绝对最大额定值............................................... .................................. 31
典型封装热阻数据（误差范围： ± 15 ％ ） 31
E
LECTRICAL
C
极特
................................................................................................................... 32
AC ê
LECTRICAL
C
极特
............................................................................................................. 33
F
IGURE
12. C
LOCK
T
即时通信
.............................................................................................................................................................
F
IGURE
13. M
ODEM
I
NPUT
/O
安输出
T
即时通信
....................................................................................................................................
F
IGURE
14. 16 M
ODE
(I
NTEL
) D
ATA
B
US
R
EAD
T
即时通信
...................................................................................................................
F
IGURE
15. 16 M
ODE
(I
NTEL
) D
ATA
B
US
W
RITE
T
即时通信
.................................................................................................................
F
IGURE
16. 68 M
ODE
(M
OTOROLA
) D
ATA
B
US
R
EAD
T
即时通信
..........................................................................................................
F
IGURE
17. 68 M
ODE
(M
OTOROLA
) D
ATA
B
US
W
RITE
T
即时通信
.........................................................................................................
F
IGURE
18. R
ECEIVE
R
EADY
I
NTERRUPT
T
即时通信
[N
ON
-FIFO M
ODE
] ...............................................................................................
F
IGURE
19. T
RANSMIT
R
EADY
I
NTERRUPT
T
即时通信
[N
ON
-FIFO M
ODE
] .............................................................................................
F
IGURE
20. R
ECEIVE
R
EADY
I
NTERRUPT
T
即时通信
[ FIFO M
ODE
] .......................................................................................................
F
IGURE
21. T
RANSMIT
R
EADY
I
NTERRUPT
T
即时通信
[ FIFO M
ODE
] .....................................................................................................
34
35
36
36
37
37
38
38
39
39
包装尺寸（ 40引脚QFN封装 - 6 ×6× 0.9
mm
).............................................. 40
R
EVISIONS
.................................................................................................................................................. 41
目录.....................................................................................................
I
II
