xr16m2751 Exar Corporation, xr16m2751 Datasheet - Page 53

• Manufacturer Part Number: xr16m2751
• Description: High Performance Duart With 64-byte Fifo And Powersave
• Manufacturer: Exar Corporation

XR16M2751
1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
ABSOLUTE MAXIMUM RATINGS.................................................................................. 41
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 41
ELECTRICAL CHARACTERISTICS ............................................................................... 41
PACKAGE DIMENSIONS (48 PIN TQFP - 7 X 7 X 1
DC E
AC E
R
4.4 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY .................................................................................. 26
4.5 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY......................................................................................... 28
4.6 LINE CONTROL REGISTER (LCR) - READ/WRITE......................................................................................... 29
4.7 MODEM CONTROL REGISTER (MCR) OR GENERAL PURPOSE OUTPUTS CONTROL - READ/WRITE.. 31
4.8 LINE STATUS REGISTER (LSR) - READ ONLY.............................................................................................. 32
4.9 MODEM STATUS REGISTER (MSR) - READ ONLY ....................................................................................... 33
4.10 SCRATCH PAD REGISTER (SPR) - READ/WRITE ....................................................................................... 34
4.11 ENHANCED MODE SELECT REGISTER (EMSR) ......................................................................................... 34
4.12 FIFO LEVEL REGISTER (FLVL) - READ-ONLY............................................................................................. 35
4.13 BAUD RATE GENERATOR REGISTERS (DLL, DLM AND DLD) - READ/WRITE ....................................... 35
4.14 DEVICE IDENTIFICATION REGISTER (DVID) - READ ONLY....................................................................... 35
4.15 DEVICE REVISION REGISTER (DREV) - READ ONLY ................................................................................. 36
4.16 TRIGGER LEVEL REGISTER (TRG) - WRITE-ONLY .................................................................................... 36
4.17 RX/TX FIFO LEVEL COUNT REGISTER (FC) - READ-ONLY ....................................................................... 36
4.18 FEATURE CONTROL REGISTER (FCTR) - READ/WRITE........................................................................... 36
4.19 ENHANCED FEATURE REGISTER (EFR) ..................................................................................................... 37
TA=0o to 70oC (-40o to +85oC for industrial grade package), Vcc is 1.62V to 3.63V ........................................... 41
Unless otherwise noted: TA=0o to 70oC (-40o to +85oC for industrial grade package), Vcc=1.62 - 3.63V, 70 pF load
where applicable....................................................................................................................................................... 42
EVISION
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
4.3.1 IER VERSUS RECEIVE FIFO INTERRUPT MODE OPERATION ............................................................................... 25
4.3.2 IER VERSUS RECEIVE/TRANSMIT FIFO POLLED MODE OPERATION .................................................................. 25
4.4.1 INTERRUPT GENERATION: ........................................................................................................................................ 26
4.4.2 INTERRUPT CLEARING: ............................................................................................................................................. 27
4.19.1 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - READ/WRITE .............................. 39
10: I
11: T
12: P
13: S
14: A
15: T
16: S
17: UART RESET CONDITIONS FOR CHANNEL A AND B ............................................................................................ 40
13. C
14. M
15. 16 M
16. 16 M
17. 68 M
18. 68 M
19. R
20. T
21. R
22. R
23. T
24. T
H
ISTORY
NTERRUPT
RANSMIT AND
RIGGER
ARITY SELECTION
CRATCHPAD
UTO
OFTWARE
RANSMIT
RANSMIT
RANSMIT
LOCK
ECEIVE
ECEIVE
ECEIVE
ODEM
C
C
RTS H
ODE
ODE
ODE
ODE
HARACTERISTICS
HARACTERISTICS
...................................................................................................................................... 51
T
T
I
IMING
NPUT
R
R
R
ABLE
(I
(I
(M
(M
S
F
R
R
R
EADY
EADY
EADY
NTEL
NTEL
OURCE AND
LOW
YSTERESIS
EADY
EADY
EADY
OTOROLA
OTOROLA
S
R
/O
WAP
............................................................................................................................................................. 43
S
ECEIVE
) D
) D
UTPUT
& I
& I
& I
ELECT
C
& I
& I
& I
........................................................................................................................................................ 30
ONTROL
S
ATA
ATA
NTERRUPT
NTERRUPT
NTERRUPT
ELECTION
NTERRUPT
NTERRUPT
NTERRUPT
) D
) D
FIFO T
T
................................................................................................................................................ 35
................................................................................................................................................ 37
B
B
P
IMING
ATA
ATA
US
US
RIORITY
F
............................................................................................................. 41
............................................................................................................. 42
UNCTIONS
R
W
B
B
EAD
T
T
T
RIGGER
RITE
US
US
F
.................................................................................................................................... 34
T
T
T
IMING
IMING
IMING
OR
IMING
IMING
IMING
L
R
W
T
EVEL
T
C
EAD
IMING
RITE
IMING
HANNELS
[N
[FIFO M
[FIFO M
T
........................................................................................................................ 38
[N
[FIFO M
[FIFO M
ABLE AND
ON
T
..................................................................................................................... 27
T
ON
IMING
................................................................................................................... 44
.................................................................................................................. 45
IMING
-FIFO M
-FIFO M
ODE
ODE
A & B ................................................................................................. 44
.......................................................................................................... 45
ODE
ODE
......................................................................................................... 46
L
, DMA D
, DMA E
II
EVEL
ODE
, DMA M
, DMA M
ODE
]
S
FOR
]
ELECTION
FOR
NABLED
ISABLED
ODE
ODE
C
C
HANNELS
mm
HANNELS
D
E
]
NABLED
]
ISABLED
) ............................................... 50
FOR
FOR
.......................................................................... 29
C
A & B ......................................................... 46
C
A & B ....................................................... 47
HANNELS
]
HANNELS
]
FOR
FOR
C
C
HANNELS
HANNELS
A & B......................................... 48
A & B........................................ 47
A & B ............................ 49
A & B............................ 48
REV. 1.0.0