XR16L580 Exar Corporation, XR16L580 Datasheet - Page 47

• Manufacturer Part Number: XR16L580
• Description: Smallest 2.25 to 5.5V Uart With 16-Byte Fifo And Power-save
• Manufacturer: Exar Corporation

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SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
ABSOLUTE MAXIMUM RATINGS .................................................................................. 34
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 34
PACKAGE DIMENSIONS (48 PIN TQFP - 7 X 7 X 1 MM) .............................................. 43
PACKAGE DIMENSIONS (32 PIN QFN - 5 X 5 X 0.9 MM) ............................................. 44
T
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ABLE OF
DC E
AC E
R
................................................................................................................................................................... 43
4.5 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY ............................................................................... 24
4.6 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY ..................................................................................... 25
4.7 LINE CONTROL REGISTER (LCR) - READ/WRITE ..................................................................................... 26
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 SCRATCHPAD REGISTER (SPR) - READ/WRITE ..................................................................................... 31
4.12 BAUD RATE GENERATOR REGISTERS (DLL AND DLM) - READ/WRITE .............................................. 31
4.13 DEVICE IDENTIFICATION REGISTER (DVID) - READ ONLY .................................................................... 31
4.14 DEVICE REVISION REGISTER (DREV) - READ ONLY .............................................................................. 31
4.15
4.16 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - WRITE ONLY ................ 33
Unless otherwise noted: TA=0o to 70oC (-40o to +85oC for industrial grade package), Vcc=2.25 - 5.5V, 50 pF load
where applicable ....................................................................................................................................................... 36
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
4.5.1 INTERRUPT GENERATION: ...................................................................................................................................... 24
4.5.2 INTERRUPT CLEARING: ........................................................................................................................................... 24
ENHANCED FEATURE REGISTER (EFR) ................................................................................................. 31
7: I
8: T
9: P
10: S
11: UART RESET CONDITIONS FOR CHANNEL A AND B............................................................................................ 34
14. C
15. M
16. 16 M
17. 16 M
18. 68 M
19. 68 M
20. R
21. T
22. R
23. T
H
C
ISTORY
NTERRUPT
ONTENTS
RANSMIT AND
ARITY SELECTION
OFTWARE
RANSMIT
RANSMIT
LOCK
ECEIVE
ECEIVE
ODEM
C
C
ODE
ODE
ODE
ODE
HARACTERISTICS
HARACTERISTICS
...................................................................................................................................... 45
T
I
IMING
NPUT
S
R
R
(I
(I
(M
(M
F
R
R
OURCE AND
EADY
EADY
NTEL
NTEL
LOW
EADY
EADY
R
OTOROLA
OTOROLA
............................................................................................................
/O
............................................................................................................................................................. 37
ECEIVE
) D
) D
.......................................................................................................................................................... 28
UTPUT
I
I
C
NTERRUPT
NTERRUPT
I
I
ONTROL
NTERRUPT
NTERRUPT
ATA
ATA
FIFO T
) D
) D
P
T
B
B
RIORITY
IMING
ATA
ATA
US
US
.............................................................................................................. 35
.............................................................................................................. 36
F
T
T
UNCTIONS
R
W
RIGGER
B
B
T
T
IMING
IMING
EAD
.................................................................................................................................... 38
RITE
US
US
IMING
IMING
L
EVEL
R
W
T
T
EAD
[N
[FIFO M
IMING
RITE
IMING
[N
[FIFO M
L
ON
........................................................................................................................ 32
EVEL
....................................................................................................................... 25
ON
T
-FIFO M
T
................................................................................................................... 38
IMING
-FIFO M
IMING
................................................................................................................. 39
S
ODE
ELECTION
ODE
.......................................................................................................... 39
......................................................................................................... 40
] ....................................................................................................... 41
ODE
] ..................................................................................................... 42
II
ODE
] ............................................................................................... 40
] ............................................................................................. 41
.............................................................................................. 26
XR16L580
REV. 1.0.0
I