xr16c2852ij Exar Corporation, xr16c2852ij Datasheet - Page 51

• Manufacturer Part Number: xr16c2852ij
• Description: 2.97v To 5.5v Dual Uart With 128-byte Fifos
• Manufacturer: Exar Corporation

xr
2.97V TO 5.5V DUAL UART WITH 128-BYTE FIFOS
ABSOLUTE MAXIMUM RATINGS .................................................................................. 39
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 39
ELECTRICAL CHARACTERISTICS................................................................................ 39
PACKAGE DIMENSIONS (44 PIN PLCC) ....................................................................... 47
T
ABLE OF
DC E
AC E
TA=0
APPLICABLE
4.4 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY ............................................................................... 25
4.5 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY ..................................................................................... 26
4.6 LINE CONTROL REGISTER (LCR) - READ/WRITE ..................................................................................... 28
4.7 ALTERNATE FUNCTION REGISTER (AFR) - READ/WRITE ....................................................................... 29
4.8 MODEM CONTROL REGISTER (MCR) OR GENERAL PURPOSE OUTPUTS CONTROL - READ/WRITE 30
4.9 LINE STATUS REGISTER (LSR) - READ ONLY ........................................................................................... 31
4.10 MODEM STATUS REGISTER (MSR) - READ ONLY .................................................................................. 32
4.11 SCRATCH PAD REGISTER (SPR) - READ/WRITE .................................................................................... 33
4.12 ENHANCED MODE SELECT REGISTER (EMSR) ...................................................................................... 33
4.13 FIFO LEVEL REGISTER (FLVL) - READ-ONLY ......................................................................................... 34
4.14 BAUD RATE GENERATOR REGISTERS (DLL AND DLM) - READ/WRITE .............................................. 34
4.15 DEVICE IDENTIFICATION REGISTER (DVID) - READ ONLY .................................................................... 35
4.16 DEVICE REVISION REGISTER (DREV) - READ ONLY .............................................................................. 35
4.17 TRIGGER LEVEL / FIFO DATA COUNT REGISTER (TRG) - WRITE-ONLY ............................................. 35
4.18 FIFO DATA COUNT REGISTER (FC) - READ-ONLY ................................................................................. 35
4.19
4.20 ENHANCED FEATURE REGISTER (EFR) .................................................................................................. 36
4.21 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - READ/WRITE ................ 37
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
LECTRICAL
LECTRICAL
O TO
4.3.2 IER VERSUS RECEIVE/TRANSMIT FIFO POLLED MODE OPERATION................................................................ 24
4.4.1 INTERRUPT GENERATION: ...................................................................................................................................... 25
4.4.2 INTERRUPT CLEARING: ........................................................................................................................................... 25
FEATURE CONTROL REGISTER (FCTR) - READ/WRITE ....................................................................... 35
9: I
10: T
11: P
12: S
13: E
14: T
15: S
16: UART RESET CONDITIONS FOR CHANNEL A AND B............................................................................................ 38
14. XR16C2852 VOL S
15. XR16C2852 VOH S
16. C
17. M
18. D
19. D
21. T
20. R
22. R
23. R
24. T
25. T
C
70
................................................................................................................................................. 41
NTERRUPT
ONTENTS
O
RANSMIT AND
ARITY SELECTION
CRATCHPAD
XTENDED
RIGGER
OFTWARE
RANSMIT
RANSMIT
RANSMIT
LOCK
ATA
ATA
ECEIVE
ECEIVE
ECEIVE
C (-40
ODEM
C
C
HARACTERISTICS
HARACTERISTICS
B
B
T
US
US
I
T
IMING
NPUT
S
R
R
R
ABLE
O TO
RTS H
F
R
R
R
OURCE AND
R
W
EADY
EADY
EADY
LOW
EADY
EADY
EADY
EAD
............................................................................................................
S
RITE
R
/O
WAP
............................................................................................................................................................. 42
S
ECEIVE
+85
UTPUT
ELECT
& I
& I
& I
C
YSTERESIS
T
........................................................................................................................................................ 29
T
& I
& I
& I
ONTROL
IMING
S
IMING
NTERRUPT
NTERRUPT
NTERRUPT
INK
ELECTION
OURCE
NTERRUPT
NTERRUPT
NTERRUPT
O
P
C
FIFO T
............................................................................................................................................... 35
T
RIORITY
C
.............................................................................................................................................. 43
IMING
............................................................................................................................................ 43
URRENT
FOR INDUSTRIAL GRADE PACKAGE
.............................................................................................................. 39
.............................................................................................................. 41
F
........................................................................................................................................ 34
C
UNCTIONS
URRENT
T
T
T
RIGGER
.................................................................................................................................... 33
F
T
T
T
IMING
IMING
IMING
OR
L
IMING
IMING
IMING
EVEL
C
C
HART
HANNELS
[N
[FIFO M
[FIFO M
........................................................................................................................ 36
C
T
....................................................................................................................... 26
[N
[FIFO M
[FIFO M
HART
ABLE AND
ON
ON
................................................................................................................... 40
-FIFO M
-FIFO M
............................................................................................................. 40
ODE
ODE
A & B ................................................................................................. 42
ODE
ODE
L
II
, DMA D
, DMA E
EVEL
ODE
, DMA M
, DMA M
ODE
]
S
]
FOR
ELECTION
FOR
NABLED
ISABLED
ODE
ODE
C
C
HANNELS
HANNELS
D
E
), V
]
]
ISABLED
NABLED
FOR
.......................................................................... 27
FOR
CC IS
C
A & B ......................................................... 44
C
A & B ....................................................... 44
HANNELS
]
HANNELS
]
FOR
FOR
2.97V
C
C
HANNELS
HANNELS
A & B......................................... 45
A & B........................................ 45
TO
5.5V, 70
A & B ............................ 46
A & B ........................... 46
P
F L
XR16C2852
OAD WHERE
REV. 2.1.1
I