XR16L2751CM EXAR [Exar Corporation], XR16L2751CM Datasheet - Page 52

• Manufacturer Part Number: XR16L2751CM
• Description: 2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
• Manufacturer: EXAR [Exar Corporation]

áç
áç
ABSOLUTE MAXIMUM RATINGS .................................................................................. 40
ELECTRICAL CHARACTERISTICS................................................................................ 40
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 40
PACKAGE DIMENSIONS (48 PIN TQFP - 7 X 7 X 1 MM) .............................................. 49
TABLE OF CONTENTS ................................................................................................................................. I
áç
áç
T
T
T
T
T
T
T
T
F
F
F
F
F
F
F
F
F
F
F
F
ABLE
ABLE
ABLE
ABLE
ABLE
ABLE
ABLE
ABLE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
4.1 R
4.2 T
4.3 B
4.4 I
4.5 I
4.6 FIFO C
4.7 L
4.8 M
4.9 L
4.10 M
4.11 S
4.12 E
4.13 FIFO L
4.14 B
4.15 D
4.16 D
4.17 T
4.18 FIFO D
4.19 F
4.20 E
4.21 S
DC E
AC E
TA=0
R
EVISION
10: I
11: T
12: P
13: S
14: A
15: T
16: S
17: UART RESET CONDITIONS FOR CHANNEL A AND B ................................................................................................... 39
4.4.1 IER versus Receive FIFO Interrupt Mode Operation ............................................................................... 25
4.4.2 IER versus Receive/Transmit FIFO Polled Mode Operation.................................................................... 25
4.5.1 Interrupt Generation: ................................................................................................................................ 26
4.5.2 Interrupt Clearing: .................................................................................................................................... 26
NTERRUPT
NTERRUPT
14. C
15. M
16. 16 M
17. 16 M
18. 68 M
19. 68 M
20. R
21. T
22. R
23. R
24. T
25. T
INE
INE
RANSMIT
AUD
LECTRICAL
ECEIVE
LECTRICAL
O TO
ODEM
RIGGER
CRATCHPAD
NHANCED
AUD
OFTWARE
EVICE
EVICE
ODEM
EATURE
NTERRUPT
NHANCED
RANSMIT AND
RIGGER
ARITY SELECTION
CRATCHPAD
UTO
OFTWARE
C
S
RANSMIT
RANSMIT
RANSMIT
LOCK
ECEIVE
ECEIVE
ECEIVE
ODEM
H
R
ONTROL
TATUS
70
R
ONTROL
ISTORY
ATE
RTS H
ODE
ODE
ODE
ODE
C
EVEL
ATA
ATE
H
I
R
S
O
ONTROL
T
DENTIFICATION
H
I
T
L
OLDING
EVISION
TATUS
C (-40
IMING
NPUT
R
R
R
E
S
C
ABLE
(I
(I
(M
(M
G
EVEL
OLDING
S
F
R
R
R
C
C
EADY
EADY
EADY
M
F
NTEL
NTEL
NABLE
TATUS
C
R
G
ONTROL
F
LOW
OURCE AND
YSTERESIS
EADY
EADY
EADY
ENERATOR
S
R
OTOROLA
OTOROLA
HARACTERISTICS
LOW
HARACTERISTICS
.................................................................................................................................... 50
ODE
EATURE
OUNT
R
EGISTER
/O
R
R
ENERATOR
WAP
.................................................................................................................................................................... 42
EGISTER
S
R
ECEIVE
) D
) D
EGISTER
EGISTER
UTPUT
ELECT
C
& I
& I
& I
(TRG) - W
O TO
EGISTER
................................................................................................................................................................ 30
R
R
& I
& I
& I
R
ONTROL
R
C
S
ATA
ATA
S
EGISTER
NTERRUPT
NTERRUPT
NTERRUPT
R
R
R
EGISTER
EGISTER
ELECTION
NTERRUPT
NTERRUPT
NTERRUPT
EGISTER
R
ONTROL
ELECT
) D
) D
EGISTER
EGISTER
EGISTER
R
FIFO T
....................................................................................................................................................... 35
....................................................................................................................................................... 36
EGISTER
T
B
B
P
+85
R
EGISTER
IMING
ATA
ATA
(LSR) - R
US
US
RIORITY
(FLVL) - R
R
EGISTER
D
F
(LCR) - R
(SPR) - R
R
EGISTER
UNCTIONS
R
W
IVISORS
(FCR) - W
O
B
B
R
EGISTERS
EAD
............................................................................................................................................ 34
RITE
T
T
T
RIGGER
(MSR) - R
C
RITE
F
US
US
(MCR)
(RHR) - R
T
T
T
EGISTER
R
IMING
IMING
IMING
OR
(DREV) - R
(IER) - R
(ISR) - R
IMING
IMING
IMING
(THR) - W
FOR INDUSTRIAL GRADE PACKAGE
L
........................................................................................................... 40
........................................................................................................... 41
EGISTERS
R
W
(FC) - R
T
EVEL
(FCTR) - R
T
-O
C
EAD
IMING
RITE
IMING
(EFR) ........................................................................................... 37
EAD
HANNELS
[N
[FIFO M
[FIFO M
L
(DLL
............................................................................................................................... 37
NLY
[N
[FIFO M
[FIFO M
EAD
(DVID) - R
EAD
............................................................................................................................. 27
EVEL
EAD
T
ON
2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
OR
T
ON
RITE
IMING
.......................................................................................................................... 44
......................................................................................................................... 44
IMING
(EMSR) ................................................................................. 34
(DLL
O
-FIFO M
EAD
-O
-FIFO M
EAD
EAD
/W
EAD
/W
G
EAD
............................................................................................ 36
S
NLY
AND
ODE
ODE
(XOFF1, XOFF2, XON1, XON2) - R
RITE
ELECTION
A & B......................................................................................................... 43
-O
EAD
.................................................................................................................. 45
ENERAL
NLY
ODE
ODE
RITE
RITE
................................................................................................................ 45
/W
-O
O
- O
-O
AND
EAD
NLY
, DMA D
, DMA E
..................................................................................... 32
DLM) - R
NLY
ODE
, DMA M
, DMA M
-O
NLY
O
RITE
EAD
NLY
ODE
.................................................................................. 35
NLY
/W
................................................................................ 29
................................................................................ 34
NLY
NLY
II
DLM) - R
............................................................................... 27
]
................................................................................................... 29
FOR
]
P
............................................................................. 33
............................................................................ 26
RITE
FOR
O
........................................................................... 24
........................................................................... 36
NABLED
ISABLED
URPOSE
.......................................................................... 25
......................................................................... 24
......................................................................... 36
NLY
ODE
ODE
C
C
HANNELS
EAD
.................................................................... 36
HANNELS
D
E
]
................................................................. 35
NABLED
]
ISABLED
EAD
FOR
/W
FOR
O
RITE
/W
UTPUTS
C
A & B................................................................. 46
C
A & B............................................................... 46
HANNELS
), V
]
HANNELS
]
RITE
FOR
FOR
................................................... 24
CC IS
C
C
HANNELS
C
.............................................. 35
HANNELS
A & B ................................................ 47
A & B ............................................... 47
ONTROL
2.5- 5.0V +/-10%............... 41
A & B.................................... 48
A & B ................................... 48
EAD
- R
/W
EAD
RITE
/W
XR16L2751
RITE
............... 39
....... 31
REV. 1.0.0