xr16m654 Exar Corporation, xr16m654 Datasheet - Page 58

• Manufacturer Part Number: xr16m654
• Description: 1.62v To 3.63v Quad Uart With 64-byte Fifo
• Manufacturer: Exar Corporation

XR16M654/654D
1.62V TO 3.63V QUAD UART WITH 64-BYTE FIFO
ABSOLUTE MAXIMUM RATINGS.................................................................................. 42
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 42
ELECTRICAL CHARACTERISTICS ............................................................................... 42
DC E
AC E
TA = -40
P
R
ACKAGE
4.4 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY .................................................................................. 30
4.5 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY......................................................................................... 31
4.6 LINE CONTROL REGISTER (LCR) - READ/WRITE......................................................................................... 33
4.7 MODEM CONTROL REGISTER (MCR) OR GENERAL PURPOSE OUTPUTS CONTROL - READ/WRITE.. 34
4.8 LINE STATUS REGISTER (LSR) - READ ONLY.............................................................................................. 36
4.9 MODEM STATUS REGISTER (MSR) - READ ONLY ....................................................................................... 37
4.10 SCRATCH PAD REGISTER (SPR) - READ/WRITE ....................................................................................... 37
4.11 BAUD RATE GENERATOR REGISTERS (DLL AND DLM) - READ/WRITE................................................. 38
4.12 ENHANCED FEATURE REGISTER (EFR) - READ/WRITE ........................................................................... 38
4.13 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - READ/WRITE................... 40
4.14 FIFO STATUS REGISTER (FSTAT) - READ/WRITE...................................................................................... 40
EVISION
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
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
LECTRICAL
LECTRICAL
4.3.2 IER VERSUS RECEIVE/TRANSMIT FIFO POLLED MODE OPERATION .................................................................. 29
4.4.1 INTERRUPT GENERATION: ........................................................................................................................................ 30
4.4.2 INTERRUPT CLEARING: ............................................................................................................................................. 30
11: I
12: T
13: P
14: INT O
15: S
16: S
17: UART RESET CONDITIONS FOR CHANNELS A-D .................................................................................................. 41
O TO
15. C
16. M
17. 16 M
18. 16 M
19. 68 M
21. R
20. 68 M
22. T
23. R
24. R
25. T
26. T
D
H
IMENSIONS
ISTORY
NTERRUPT
RANSMIT AND
ARITY SELECTION
AMPLING
OFTWARE
RANSMIT
RANSMIT
RANSMIT
LOCK
ECEIVE
ECEIVE
ECEIVE
+85
ODEM
C
C
UTPUT
ODE
ODE
ODE
ODE
HARACTERISTICS
HARACTERISTICS
O
...................................................................................................................................... 56
T
I
C, V
IMING
NPUT
R
R
R
R
(I
(I
(M
(M
S
F
R
R
R
EADY
EADY
EADY
ATE
NTEL
NTEL
OURCE AND
LOW
M
................................................................................................................................ 51
EADY
EADY
EADY
OTOROLA
OTOROLA
R
ODES
/O
CC IS
............................................................................................................................................................. 44
S
ECEIVE
) D
) D
UTPUT
& I
& I
& I
C
ELECT
& I
& I
& I
........................................................................................................................................................ 34
ONTROL
ATA
ATA
NTERRUPT
NTERRUPT
NTERRUPT
..................................................................................................................................................... 35
NTERRUPT
NTERRUPT
NTERRUPT
1.62
) D
) D
FIFO T
T
B
B
P
............................................................................................................................................... 38
IMING
ATA
ATA
US
US
RIORITY
F
............................................................................................................. 42
............................................................................................................. 43
TO
UNCTIONS
R
W
B
B
EAD
T
T
T
RIGGER
RITE
US
US
F
T
T
T
IMING
IMING
IMING
3.63V, 70
OR
IMING
IMING
IMING
L
R
W
T
EVEL
T
C
EAD
IMING FOR
RITE
IMING FOR
HANNELS
[N
[FIFO M
[FIFO M
L
........................................................................................................................ 39
[N
[FIFO M
[FIFO M
EVEL
ON
T
..................................................................................................................... 31
T
ON
IMING FOR
IMING FOR
-FIFO M
-FIFO M
S
P
ODE
ODE
C
A-D .................................................................................................... 45
ELECTION
F
C
ODE
ODE
HANNELS
HANNELS
LOAD WHERE APPLICABLE
, DMA D
, DMA E
2
ODE
, DMA M
, DMA M
C
ODE
C
HANNELS
HANNELS
]
FOR
]
............................................................................................ 32
A-D.................................................................................... 45
FOR
A-D .................................................................................. 46
NABLED
ISABLED
ODE
ODE
C
C
HANNELS
A-D........................................................................... 46
A-D ......................................................................... 47
HANNELS
D
E
]
NABLED
]
ISABLED
FOR
FOR
C
A-D ............................................................ 47
C
A-D .......................................................... 48
HANNELS
]
HANNELS
]
FOR
FOR
C
C
........................................... 43
HANNELS
HANNELS
A-D............................................ 49
A-D........................................... 48
A-D ............................... 50
A-D............................... 49
REV. 1.0.0