xr16c2552ij Exar Corporation, xr16c2552ij Datasheet - Page 36

• Manufacturer Part Number: xr16c2552ij
• Description: 2.97v To 5.5v Dual Uart With 16-byte Fifo
• Manufacturer: Exar Corporation

XR16C2552
REV. 1.0.0
ABSOLUTE MAXIMUM RATINGS...................................................................................26
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 26
ELECTRICAL CHARACTERISTICS ................................................................................26
PACKAGE DIMENSIONS (44 PIN PLCC) .......................................................................33
T
ABLE OF
DC E
AC E
4.9 LINE STATUS REGISTER (LSR) - READ ONLY ........................................................................................... 22
4.10 MODEM STATUS REGISTER (MSR) - READ ONLY .................................................................................. 23
4.11 SCRATCH PAD REGISTER (SPR) - READ/WRITE .................................................................................... 23
4.12 BAUD RATE GENERATOR REGISTERS (DLL AND DLM) - READ/WRITE .............................................. 24
4.13 ALTERNATE FUNCTION REGISTER (AFR) - READ/WRITE ..................................................................... 24
TA=-40o to +85oC, Vcc is 2.97 to 5.5V, 70 pF load where applicable ...................................................................... 27
T
F
F
F
F
F
F
F
F
F
F
ABLE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
LECTRICAL
LECTRICAL
R
EVISION
11: UART RESET CONDITIONS FOR CHANNEL A AND B............................................................................................ 25
12. C
13. M
14. D
15. D
17. T
16. R
18. R
19. R
20. T
21. T
C
ONTENTS
RANSMIT
RANSMIT
RANSMIT
LOCK
ATA
ATA
ECEIVE
ECEIVE
ECEIVE
ODEM
H
C
C
ISTORY
HARACTERISTICS
HARACTERISTICS
B
B
T
US
US
I
IMING
NPUT
R
R
R
R
R
R
R
W
EADY AND
EADY
EADY
EADY
EADY
EADY
EAD
RITE
............................................................................................................
............................................................................................................................. 34
/O
............................................................................................................................................................. 28
UTPUT
& I
& I
T
T
& I
& I
& I
IMING
IMING
NTERRUPT
NTERRUPT
NTERRUPT
NTERRUPT
NTERRUPT
I
NTERRUPT
T
.............................................................................................................................................. 29
IMING
............................................................................................................................................. 29
..............................................................................................................26
..............................................................................................................27
T
T
F
T
IMING
IMING
T
T
OR
T
IMING
IMING
IMING
IMING
C
HANNELS
[FIFO M
[FIFO M
[N
[FIFO M
[FIFO M
[N
ON
ON
-FIFO M
-FIFO M
ODE
ODE
A & B ................................................................................................. 28
ODE
ODE
II
, DMA D
, DMA E
, DMA M
, DMA M
ODE
ODE
2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
]
]
FOR
NABLED
ISABLED
FOR
ODE
ODE
C
C
HANNELS
D
E
HANNELS
]
NABLED
]
ISABLED
FOR
FOR
C
C
A & B ....................................................... 30
HANNELS
]
HANNELS
]
A & B...................................................... 30
FOR
FOR
C
C
HANNELS
HANNELS
A & B......................................... 31
A & B........................................ 31
A & B ............................ 32
A & B............................ 32
xr
I