xr16m680 Exar Corporation, xr16m680 Datasheet - Page 57

• Manufacturer Part Number: xr16m680
• Description: 1.62v To 3.63v High Performance Uart With 32-byte Fifo
• Manufacturer: Exar Corporation

XR16M680
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 32-BYTE FIFO
ABSOLUTE MAXIMUM RATINGS.................................................................................. 44
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 44
ELECTRICAL CHARACTERISTICS ............................................................................... 44
PACKAGE DIMENSIONS (32 PIN QFN - 5 X 5 X 0.9
PACKAGE DIMENSIONS (48 PIN TQFP - 7 X 7 X 1
PACKAGE DIMENSIONS (25 PIN BGA - 3 X 3 X 0.8
DC E
AC E
TA = -40
R
4.4 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY .................................................................................. 29
4.5 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY......................................................................................... 31
4.6 LINE CONTROL REGISTER (LCR) - READ/WRITE......................................................................................... 32
4.7 MODEM CONTROL REGISTER (MCR) OR GENERAL PURPOSE OUTPUTS CONTROL - READ/WRITE.. 34
4.8 LINE STATUS REGISTER (LSR) - READ ONLY.............................................................................................. 35
4.9 MODEM STATUS REGISTER (MSR) - READ ONLY ....................................................................................... 36
4.10 MODEM STATUS REGISTER (MSR) - WRITE ONLY .................................................................................... 37
4.11 SCRATCH PAD REGISTER (SPR) - READ/WRITE ....................................................................................... 37
4.12 ENHANCED MODE SELECT REGISTER (EMSR) - WRITE-ONLY ............................................................... 38
4.13 BAUD RATE GENERATOR REGISTERS (DLL, DLM AND DLD) - READ/WRITE ....................................... 39
4.14 RX/TX FIFO LEVEL COUNT REGISTER (FC) - READ-ONLY ....................................................................... 40
4.15 FEATURE CONTROL REGISTER (FCTR) - READ/WRITE............................................................................ 40
4.16 ENHANCED FEATURE REGISTER (EFR) - READ/WRITE ........................................................................... 41
4.17 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - READ/WRITE................... 42
EVISION
T
T
T
T
T
T
T
T
T
F
F
F
F
F
F
F
F
F
F
ABLE
ABLE
ABLE
ABLE
ABLE
ABLE
ABLE
ABLE
ABLE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
LECTRICAL
LECTRICAL
4.3.2 IER VERSUS RECEIVE/TRANSMIT FIFO POLLED MODE OPERATION .................................................................. 28
4.4.1 INTERRUPT GENERATION: ........................................................................................................................................ 29
4.4.2 INTERRUPT CLEARING: ............................................................................................................................................. 30
8: I
9: T
10: P
11: INT O
12: S
13: S
14: BRG S
15: S
16: UART RESET CONDITIONS ...................................................................................................................................... 43
O TO
16. C
17. M
18. 16 M
19. 16 M
20. 68 M
22. R
21. 68 M
23. T
24. R
25. T
H
NTERRUPT
ISTORY
RANSMIT AND
ARITY SELECTION
CRATCHPAD
AMPLING
OFTWARE
RANSMIT
RANSMIT
LOCK
ECEIVE
ECEIVE
+85
ODEM
C
C
UTPUT
ODE
ODE
ODE
ODE
ELECT
HARACTERISTICS
HARACTERISTICS
O
...................................................................................................................................... 55
T
I
C, V
IMING
NPUT
S
R
R
R
(I
(I
(M
(M
F
R
R
OURCE AND
EADY
EADY
ATE
NTEL
NTEL
LOW
M
EADY
EADY
R
OTOROLA
OTOROLA
S
................................................................................................................................................................ 39
ODES
/O
WAP
ECEIVE
CC IS
............................................................................................................................................................. 46
S
) D
) D
UTPUT
& I
& I
C
ELECT
& I
& I
........................................................................................................................................................ 33
ONTROL
S
ATA
ATA
NTERRUPT
NTERRUPT
..................................................................................................................................................... 34
ELECTION
NTERRUPT
NTERRUPT
1.62
FIFO T
) D
) D
P
T
B
B
RIORITY
............................................................................................................................................... 39
IMING
ATA
ATA
US
US
F
............................................................................................................. 44
............................................................................................................. 45
TO
UNCTIONS
R
W
RIGGER
B
B
EAD
T
T
RITE
.................................................................................................................................... 47
US
US
.................................................................................................................................... 38
T
T
IMING
IMING
3.6V, 70
L
IMING
IMING
EVEL
R
W
T
T
EAD
IMING
RITE
IMING
T
[N
[FIFO M
ABLE AND
........................................................................................................................ 41
[N
[FIFO M
....................................................................................................................... 30
ON
T
T
ON
IMING
................................................................................................................... 47
.................................................................................................................. 48
IMING
-FIFO M
P
-FIFO M
F
ODE
.......................................................................................................... 48
ODE
LOAD WHERE APPLICABLE
......................................................................................................... 49
L
EVEL
] .................................................................................................... 50
II
ODE
] .................................................................................................. 51
ODE
S
] ............................................................................................ 49
ELECTION
] .......................................................................................... 50
mm
mm
mm
............................................................................ 32
) ............................................... 53
) .............................................. 52
).............................................. 54
............................................. 45
REV. 1.0.0