
August 99
M16550 UART MACRO
Data Sheet
Logic Design Solutions
2/11
1.
DESCRIPTION ............................................................................................................................................................ 3
1.1
1.2
1.3
1.4
1.5
S
YMBOL
..................................................................................................................................................................... 3
P
IN
D
ESCRIPTION
........................................................................................................................................................ 3
F
UNCTIONAL
D
ESCRIPTION
......................................................................................................................................... 4
R
EGISTER
A
DDRESS
M
AP
........................................................................................................................................... 5
R
EGISTERS
.................................................................................................................................................................. 5
1.5.1
Line Control Register....................................................................................................................................... 5
1.5.2
Divisor register ................................................................................................................................................ 5
1.5.3
Line Status Register.......................................................................................................................................... 6
1.5.4
FIFO Control Register..................................................................................................................................... 7
1.5.5
Interrupt Identification Register....................................................................................................................... 7
1.5.6
Interrupt Enable Register................................................................................................................................. 8
1.5.7
MODEM Control Register ............................................................................................................................... 8
1.5.8
MODEM status register ................................................................................................................................... 9
1.5.9
Receiver buffer register.................................................................................................................................... 9
1.5.10
Transmitter buffer register............................................................................................................................... 9
1.5.11
Transmitter FIFO............................................................................................................................................. 9
1.5.12
Receiver FIFO.................................................................................................................................................. 9
1.6
W
RITE CYCLE
........................................................................................................................................................... 10
1.7
R
EAD CYCLE
............................................................................................................................................................. 10
2.
SPECIFICITY AND RECALL ................................................................................................................................. 11
3.
TOOL VERSION USED............................................................................................................................................ 11
4.
RECOMMENDED DESIGN EXPERIENCE.......................................................................................................... 11
5.
AVAILABLE SUPPORT PRODUCTS.................................................................................................................... 11
6.
ORDERING INFORMATION.................................................................................................................................. 11
7.
RELATED INFORMATION.................................................................................................................................... 11