XR16L580_07 EXAR [Exar Corporation], XR16L580_07 Datasheet - Page 51

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

xr
REV. 1.4.1
GENERAL DESCRIPTION................................................................................................. 1
PIN DESCRIPTIONS ......................................................................................................... 4
1.0 PRODUCT DESCRIPTION .................................................................................................................... 7
2.0 FUNCTIONAL DESCRIPTIONS ............................................................................................................ 8
3.0 UART INTERNAL REGISTERS ........................................................................................................... 22
4.0 INTERNAL REGISTER DESCRIPTIONS ............................................................................................ 24
A
F
ORDERING INFORMATION
EATURES
PPLICATIONS
2.1 CPU INTERFACE ............................................................................................................................................. 8
2.2 5-VOLT TOLERANT INPUTS ........................................................................................................................... 9
2.3 DEVICE HARDWARE RESET .......................................................................................................................... 9
2.4 DEVICE IDENTIFICATION AND REVISION .................................................................................................... 9
2.5 INTERNAL REGISTERS ................................................................................................................................... 9
2.6 DMA MODE ...................................................................................................................................................... 9
2.7 INT (IRQ#) OUTPUT ......................................................................................................................................... 9
2.8 CRYSTAL OR EXTERNAL CLOCK INPUT ................................................................................................... 10
2.9
2.10 TRANSMITTER ............................................................................................................................................. 13
2.11 RECEIVER .................................................................................................................................................... 14
2.12
2.13
2.14
2.15
2.16
2.17 INFRARED MODE ........................................................................................................................................ 19
2.18
2.19
4.1 RECEIVE HOLDING REGISTER (RHR) - READ- ONLY ............................................................................... 24
4.2 TRANSMIT HOLDING REGISTER (THR) - WRITE-ONLY ............................................................................ 24
4.3 BAUD RATE GENERATOR DIVISORS (DLL AND DLM) - READ/WRITE ................................................... 24
4.4 INTERRUPT ENABLE REGISTER (IER) - READ/WRITE ............................................................................. 24
F
F
F
F
T
T
F
F
F
T
F
F
F
F
F
T
F
F
T
T
IGURE
IGURE
IGURE
IGURE
ABLE
ABLE
IGURE
IGURE
IGURE
ABLE
IGURE
IGURE
IGURE
IGURE
IGURE
ABLE
IGURE
IGURE
ABLE
ABLE
2.10.1 TRANSMIT HOLDING REGISTER (THR) - WRITE ONLY....................................................................................... 13
2.10.2 TRANSMITTER OPERATION IN NON-FIFO MODE ................................................................................................ 13
2.10.3 TRANSMITTER OPERATION IN FIFO MODE ......................................................................................................... 13
2.11.1 RECEIVE HOLDING REGISTER (RHR) - READ-ONLY .......................................................................................... 14
2.18.1 SLEEP MODE ........................................................................................................................................................... 20
2.18.2 POWER-SAVE FEATURE ........................................................................................................................................ 20
4.4.1 IER VERSUS RECEIVE FIFO INTERRUPT MODE OPERATION ............................................................................. 24
PROGRAMMABLE BAUD RATE GENERATOR .......................................................................................... 11
AUTO RTS (HARDWARE) FLOW CONTROL ............................................................................................ 16
AUTO RTS HYSTERESIS ........................................................................................................................... 16
AUTO CTS FLOW CONTROL ..................................................................................................................... 16
AUTO XON/XOFF (SOFTWARE) FLOW CONTROL .................................................................................. 18
SPECIAL CHARACTER DETECT ............................................................................................................... 18
SLEEP MODE WITH WAKE-UP INTERRUPT AND POWER-SAVE FEATURE ........................................ 20
INTERNAL LOOPBACK .............................................................................................................................. 21
1: INT (IRQ#) P
2: INT (IRQ#) P
3: T
4: A
5: UART INTERNAL REGISTERS.................................................................................................................................... 22
6: INTERNAL REGISTERS DESCRIPTION. S
1. B
2. P
3. P
4. XR16L580 T
5. T
6. E
7. B
8. T
9. T
10. R
11. R
12. A
13. I
14. I
..................................................................................................................................................... 1
YPICAL DATA RATES WITH A
UTO
LOCK
ACKAGES AND
ACKAGES AND
YPICAL
XTERNAL
AUD
RANSMITTER
RANSMITTER
NFRARED
NTERNAL
............................................................................................................................................... 1
ECEIVER
ECEIVER
UTO
X
R
ON
D
RTS
ATE
C
IAGRAM
/X
RYSTAL CONNECTIONS
C
L
OFF
T
O
O
G
IN
IN
LOCK
OOP
AND
RANSMIT
YPICAL
PERATION IN NON
PERATION IN
ENERATOR AND
O
O
................................................................................................................................ 3
O
O
P
P
PERATION IN NON
PERATION IN
(S
............................................................................................................................................................. 1
PERATION FOR
PERATION
IN
IN
CTS F
B
C
OFTWARE
ACK
O
O
ONNECTION FOR
I
NTEL
UT
UT
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
D
................................................................................................................................................. 21
ATA
LOW
(24, 28
(48-TQFP P
/M
FIFO
F
14.7456 MH
) F
E
OTOROLA
OR
FIFO
C
P
NCODING AND
TABLE OF CONTENTS
-FIFO M
LOW
ONTROL
RESCALER
T
R
AND
................................................................................................................................... 10
AND
RANSMITTER
-FIFO M
ECEIVER
AND
C
E
A
ONTROL
32-
ACKAGE
XTENDED
D
UTO
ODE
O
F
ATA
Z CRYSTAL OR EXTERNAL CLOCK
PIN
LOW
PERATION
..................................................................................................................... 11
ODE
.................................................................................................................... 10
RTS F
.................................................................................................................. 15
R
B
QFN P
HADED BITS ARE ENABLED WHEN
)................................................................................................................ 3
................................................................................................................. 9
............................................................................................................... 18
ECEIVE
US
C
.............................................................................................................. 13
ONTROL
D
I
ATA
NTERCONNECTIONS
LOW
(N
ACKAGES
I
D
R
OT
ATA
C
ATE
M
ONTROL
A
ODE
VAILABLE IN
D
.......................................................................................... 11
ECODING
)........................................................................................ 2
..................................................................................... 14
M
ODE
............................................................................. 8
.......................................................................... 19
24-QFN P
....................................................................... 15
...................................................................... 12
EFR B
ACKAGE
IT
-4=1.......................................... 23
)........................................... 17
XR16L580