xr16l2552im Exar Corporation, xr16l2552im Datasheet - Page 47

• Manufacturer Part Number: xr16l2552im
• Description: Industry Smallest Package Uart With 2.25v To 5.5v Operation
• Manufacturer: Exar Corporation

xr
REV. 1.1.1
ELECTRICAL CHARACTERISTICS................................................................................ 36
PACKAGE DIMENSIONS (48 PIN TQFP - 7 X 7 X 1 MM) .............................................. 43
PACKAGE DIMENSIONS (44 PIN PLCC) ....................................................................... 44
T
ABLE OF
T
A
DC E
AC E
R
YPICAL PACKAGE THERMAL RESISTANCE DATA
BSOLUTE
4.5 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY ............................................................................... 25
4.6 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY ..................................................................................... 26
4.7 LINE CONTROL REGISTER (LCR) - READ/WRITE ..................................................................................... 27
4.8 MODEM CONTROL REGISTER (MCR) OR GENERAL PURPOSE OUTPUTS CONTROL - READ/WRITE 28
4.9 LINE STATUS REGISTER (LSR) - READ ONLY ........................................................................................... 29
4.10 MODEM STATUS REGISTER (MSR) - READ ONLY .................................................................................. 30
4.11 SCRATCH PAD REGISTER (SPR) - READ/WRITE .................................................................................... 31
4.12 BAUD RATE GENERATOR REGISTERS (DLL AND DLM) - READ/WRITE .............................................. 31
4.13 ALTERNATE FUNCTION REGISTER (AFR) - READ/WRITE ..................................................................... 31
4.14 DEVICE IDENTIFICATION REGISTER (DVID) - READ ONLY .................................................................... 32
4.15 DEVICE REVISION REGISTER (DREV) - READ ONLY .............................................................................. 32
4.16 ENHANCED FEATURE REGISTER (EFR) .................................................................................................. 32
4.17 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - READ/WRITE ................ 34
EVISION
T
T
T
T
T
F
F
F
F
F
F
F
F
F
F
ABLE
ABLE
ABLE
ABLE
ABLE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
LECTRICAL
LECTRICAL
4.4.1 IER VERSUS RECEIVE FIFO INTERRUPT MODE OPERATION ............................................................................. 23
4.4.2 IER VERSUS RECEIVE/TRANSMIT FIFO POLLED MODE OPERATION................................................................ 24
4.5.1 INTERRUPT GENERATION: ...................................................................................................................................... 25
4.5.2 INTERRUPT CLEARING: ........................................................................................................................................... 25
9: I
10: R
11: P
12: S
13: UART RESET CONDITIONS FOR CHANNELS A AND B ......................................................................................... 35
14. C
15. M
17. D
16. D
18. R
19. T
20. R
21. R
22. T
23. T
H
C
M
ISTORY
NTERRUPT
ONTENTS
AXIMUM
ARITY SELECTION
OFTWARE
ECEIVE
RANSMIT
RANSMIT
RANSMIT
LOCK
ATA
ATA
ECEIVE
ECEIVE
ECEIVE
ODEM
C
C
HARACTERISTICS
HARACTERISTICS
B
B
...................................................................................................................................... 45
T
US
US
FIFO T
I
IMING
NPUT
S
R
R
R
R
F
R
R
R
OURCE AND
W
R
EADY
EADY
EADY
ATINGS
LOW
EADY
EADY
EADY
EAD
............................................................................................................
RITE
/O
............................................................................................................................................................. 38
RIGGER
UTPUT
& I
& I
& I
C
T
........................................................................................................................................................ 28
T
& I
& I
& I
ONTROL
IMING
IMING
NTERRUPT
NTERRUPT
NTERRUPT
..................................................................................................................... 36
NTERRUPT
NTERRUPT
NTERRUPT
P
T
L
RIORITY
.............................................................................................................................................. 39
EVEL
IMING
............................................................................................................................................ 39
.............................................................................................................. 36
.............................................................................................................. 37
F
UNCTIONS
S
T
T
T
F
T
T
T
ELECTION
IMING
IMING
IMING
OR
L
IMING
IMING
IMING
EVEL
C
HANNELS
[N
[FIFO M
[FIFO M
........................................................................................................................ 33
....................................................................................................................... 26
[N
[FIFO M
[FIFO M
ON
(M
ON
................................................................................................................... 27
-FIFO M
-FIFO M
ARGIN OF ERROR
ODE
ODE
A & B ................................................................................................. 38
ODE
ODE
II
, DMA D
, DMA E
ODE
, DMA M
, DMA M
ODE
]
FOR
]
FOR
NABLED
ISABLED
ODE
ODE
C
2.25V TO 5.5V DUART WITH 16-BYTE FIFO
C
HANNELS
HANNELS
: ± 15%) ................................................ 35
D
E
]
]
ISABLED
NABLED
FOR
FOR
C
A & B ......................................................... 40
C
A & B ....................................................... 40
HANNELS
]
HANNELS
]
FOR
FOR
C
C
HANNELS
HANNELS
A & B......................................... 41
A & B........................................ 41
A & B ............................ 42
A & B ........................... 42
XR16L2552
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