XR16L580_07 EXAR [Exar Corporation], XR16L580_07 Datasheet - Page 52

• Manufacturer Part Number: XR16L580_07
• Description: SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
• Manufacturer: EXAR [Exar Corporation]

XR16L580
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
ABSOLUTE MAXIMUM RATINGS...................................................................................37
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 37
PACKAGE DIMENSIONS (48 PIN TQFP - 7 X 7 X 1 MM)...............................................46
PACKAGE DIMENSIONS (32 PIN QFN - 5 X 5 X 0.9 MM)..............................................47
PACKAGE DIMENSIONS (28 PIN QFN - 5 X 5 X 0.9 MM)..............................................48
PACKAGE DIMENSIONS (24 PIN QFN - 4 X 4 X 0.9 MM)..............................................49
T
ABLE OF
DC E
DC E
AC E
AC E
R
4.5 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY ............................................................................... 26
4.6 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY ...................................................................................... 27
4.7 LINE CONTROL REGISTER (LCR) - READ/WRITE ...................................................................................... 28
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 SCRATCHPAD REGISTER (SPR) - READ/WRITE ..................................................................................... 33
4.12 BAUD RATE GENERATOR REGISTERS (DLL AND DLM) - READ/WRITE .............................................. 33
4.13 DEVICE IDENTIFICATION REGISTER (DVID) - READ ONLY .................................................................... 33
4.14 DEVICE REVISION REGISTER (DREV) - READ ONLY .............................................................................. 33
4.15
4.16 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - WRITE ONLY ................ 35
Unless otherwise noted: TA=-40o to +85oC, Vcc=2.97 - 5.5V, 70 pF load where applicable ................................... 39
Unless otherwise noted: TA=-40o to +85oC, Vcc=1.62 - 2.75V, 70 pF load where applicable ................................. 40
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
LECTRICAL
LECTRICAL
4.4.2 IER VERSUS RECEIVE/TRANSMIT FIFO POLLED MODE OPERATION ................................................................ 25
4.5.1 INTERRUPT GENERATION: ...................................................................................................................................... 26
4.5.2 INTERRUPT CLEARING: ........................................................................................................................................... 26
ENHANCED FEATURE REGISTER (EFR) ................................................................................................. 33
7: I
8: T
9: P
10: S
11: UART RESET CONDITIONS FOR CHANNEL A AND B............................................................................................ 36
15. C
16. M
17. 16 M
18. 16 M
19. 68 M
20. 68 M
21. R
22. T
23. R
24. T
H
C
ISTORY
NTERRUPT
ONTENTS
RANSMIT AND
ARITY SELECTION
OFTWARE
RANSMIT
RANSMIT
LOCK
ECEIVE
ECEIVE
ODEM
C
C
C
C
ODE
ODE
ODE
ODE
HARACTERISTICS
HARACTERISTICS
HARACTERISTICS
HARACTERISTICS
.......................................................................................................................................50
T
I
IMING
NPUT
S
R
R
(I
(I
(M
(M
F
R
R
OURCE AND
EADY
EADY
NTEL
NTEL
LOW
EADY
EADY
OTOROLA
OTOROLA
R
............................................................................................................
/O
ECEIVE
............................................................................................................................................................. 41
) D
) D
.......................................................................................................................................................... 29
UTPUT
I
I
C
NTERRUPT
NTERRUPT
I
I
ONTROL
NTERRUPT
NTERRUPT
ATA
ATA
) D
) D
FIFO T
P
T
B
B
RIORITY
IMING
ATA
ATA
US
US
F
..............................................................................................................37
..............................................................................................................38
..............................................................................................................39
..............................................................................................................40
T
T
UNCTIONS
R
W
RIGGER
B
B
T
T
IMING
IMING
EAD
.................................................................................................................................... 41
RITE
US
US
IMING
IMING
L
EVEL
R
W
T
T
[N
[FIFO M
EAD
IMING
RITE
IMING
[N
[FIFO M
L
ON
........................................................................................................................ 34
EVEL
....................................................................................................................... 27
ON
T
-FIFO M
T
................................................................................................................... 42
IMING
-FIFO M
.................................................................................................................. 42
IMING
S
ODE
ODE
ELECTION
.......................................................................................................... 43
......................................................................................................... 43
] ....................................................................................................... 45
ODE
] ..................................................................................................... 45
II
ODE
] ............................................................................................... 44
] ............................................................................................. 44
.............................................................................................. 28
xr
REV. 1.4.1
I