參數(shù)資料
型號(hào)： XR17D152IM
廠商： EXAR CORP
元件分類： 微控制器/微處理器
英文描述： UNIVERSAL (3.3V AND 5V) PCI BUS DUAL UART
中文描述： 2 CHANNEL(S), 6.25M bps, SERIAL COMM CONTROLLER, PQFP100
封裝： 14 X 14 MM, 1 MM HEIGHT, TQFP-100
文件頁(yè)數(shù)： 67/68頁(yè)
文件大?。?/td> 772K
代理商： XR17D152IM
á
UNIVERSAL (3.3V AND 5V) PCI BUS DUAL UART
XR17D152
REV. 1.2.0
II
5.2.3 TRANSMITTER OPERATION IN FIFO MODE........................................................................................................... 27
5.2.4 AUTO RS485 OPERATION ........................................................................................................................................ 27
F
IGURE
12. T
RANSMITTER
O
PERATION
IN
NON
-FIFO M
ODE
............................................................................................................ 27
5.3 RECEIVER ...................................................................................................................................................... 28
5.3.1 RECEIVE HOLDING REGISTER (RHR)..................................................................................................................... 28
F
IGURE
13. T
RANSMIITTER
O
PERATION
IN
FIFO
AND
F
LOW
C
ONTROL
M
ODE
................................................................................... 28
5.3.2 RECEIVER OPERATION IN NON-FIFO MODE ......................................................................................................... 29
5.3.3 RECEIVER OPERATION WITH FIFO......................................................................................................................... 29
F
IGURE
14. R
ECEIVER
O
PERATION
IN
NON
-FIFO M
ODE
.................................................................................................................. 29
F
IGURE
15. R
ECEIVER
O
PERATION
IN
FIFO
AND
F
LOW
C
ONTROL
M
ODE
......................................................................................... 29
5.4 AUTOMATIC HARDWARE (RTS/CTS OR DTR/DSR) FLOW CONTROL OPERATION .............................. 30
T
ABLE
10: A
UTO
RTS/CTS
OR
DTR/DSR F
LOW
C
ONTROL
S
ELECTION
.......................................................................................... 30
F
IGURE
16. A
UTO
RTS/DTR
AND
CTS/DSR F
LOW
C
ONTROL
O
PERATION
...................................................................................... 31
5.5 INFRARED MODE .......................................................................................................................................... 32
F
IGURE
17. I
NFRARED
T
RANSMIT
D
ATA
E
NCODING
AND
R
ECEIVE
D
ATA
D
ECODING
.......................................................................... 32
5.6 INTERNAL LOOPBACK ................................................................................................................................. 33
5.7 UART CHANNEL CONFIGURATION REGISTERS AND ADDRESS DECODING. ...................................... 33
F
IGURE
18. I
NTERNAL
L
OOP
B
ACK
F
UNCTION
IN
EACH
UART C
HANNEL
.......................................................................................... 33
T
ABLE
11: UART CHANNEL CONFIGURATION REGISTERS ................................................................................................... 34
T
ABLE
12: UART CHANNEL CONFIGURATION REGISTERS DESCRIPTION. S
HADED
BITS
ARE
ENABLED
BY
EFR B
IT
-4. ....... 35
5.8 REGISTERS .................................................................................................................................................... 36
5.8.1 RECEIVE HOLDING REGISTER (RHR) - READ-ONLY ............................................................................................ 36
5.8.2 TRANSMIT HOLDING REGISTER (THR) - WRITE-ONLY......................................................................................... 36
5.8.3 BAUD RATE GENERATOR DIVISORS (DLL AND DLM) - READ/WRITE................................................................ 36
5.8.4 INTERRUPT ENABLE REGISTER (IER) - READ/WRITE.......................................................................................... 36
IER versus Receive FIFO Interrupt Mode Operation................................................................................................. 36
IER versus Receive/Transmit FIFO Polled Mode Operation..................................................................................... 36
5.8.5 INTERRUPT STATUS REGISTER (ISR) - READ-ONLY............................................................................................ 37
T
ABLE
13: I
NTERRUPT
S
OURCE
AND
P
RIORITY
L
EVEL
..................................................................................................................... 38
5.8.6 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY.................................................................................................. 39
T
ABLE
14: T
RANSMIT
AND
R
ECEIVE
FIFO T
RIGGER
L
EVEL
S
ELECTION
............................................................................................ 40
5.8.7 LINE CONTROL REGISTER (LCR) - READ/WRITE.................................................................................................. 41
5.8.8 MODEM CONTROL REGISTER (MCR) - READ/WRITE ........................................................................................... 42
T
ABLE
15: P
ARITY
SELECTION
........................................................................................................................................................ 42
5.8.9 LINE STATUS REGISTER (LSR) - READ/ONLY....................................................................................................... 43
5.8.10 MODEM STATUS REGISTER (MSR) - READ-ONLY .............................................................................................. 44
5.8.11 MODEM STATUS REGISTER (MSR) - WRITE-ONLY............................................................................................. 45
T
ABLE
16: A
UTO
RS485 H
ALF
-
DUPLEX
D
IRECTION
C
ONTROL
D
ELAY
FROM
T
RANSMIT
-
TO
-R
ECEIVE
................................................. 45
5.8.12 SCRATCH PAD REGISTER (SPR) - READ/WRITE................................................................................................. 46
5.8.13 FEATURE CONTROL REGISTER (FCTR) - READ/WRITE.................................................................................... 46
5.8.14 ENHANCED FEATURE REGISTER (EFR) - READ/WRITE..................................................................................... 47
T
ABLE
17: 16 S
ELECTABLE
H
YSTERESIS
L
EVELS
W
HEN
T
RIGGER
T
ABLE
-D
IS
S
ELECTED
................................................................ 47
T
ABLE
18: S
OFTWARE
F
LOW
C
ONTROL
F
UNCTIONS
........................................................................................................................ 48
5.8.15 TXCNT[7:0]: TRANSMIT FIFO LEVEL COUNTER - READ-ONLY ......................................................................... 49
5.8.16 TXTRG [7:0]: TRANSMIT FIFO TRIGGER LEVEL - WRITE-ONLY........................................................................ 49
5.8.17 RXCNT[7:0]: RECEIVE FIFO LEVEL COUNTER - READ-ONLY............................................................................ 49
5.8.18 RXTRG[7:0]: RECEIVE FIFO TRIGGER LEVEL - WRITE-ONLY............................................................................ 49
T
ABLE
19: UART RESET CONDITIONS...................................................................................................................................... 50
6.0 PROGRAMMING EXAMPLES .............................................................................................................51
6.1 UNLOADING RECEIVE DATA USING THE SPECIAL RECEIVE FIFO DATA WITH STATUS .................. 51
ABSOLUTE MAXIMUM RATINGS ..................................................................................52
ELECTRICAL CHARACTERISTICS................................................................................52
DC ELECTRICAL CHARACTERISTICS FOR 5V PCI B
US
I
NTERFACE
(VIO = 4.75-5.25V, VCC = 4.5-5.5V)
52
AC ELECTRICAL CHARACTERISTICS FOR 5V PCI B
US
I
NTERFACE
(VIO = 4.75-5.25V, VCC = 4.5-5.5V)
53
ELECTRICAL CHARACTERISTICS................................................................................54
DC ELECTRICAL CHARACTERISTICS FOR 3.3V PCI B
US
I
NTERFACE
(VIO = 3.0-3.6V, VCC = 3.0-5.5V)54
AC ELECTRICAL CHARACTERISTICS FOR 3.3V PCI B
US
I
NTERFACE
(VIO = 3.0-3.6V, VCC = 3.0-5.5V)55
F
IGURE
19. T
IMING
F
OR
E
XTERNAL
C
LOCK
I
NPUT
AT
XTAL1 P
IN
.................................................................................................... 56
F
IGURE
20. PCI B
US
C
ONFIGURATION
S
PACE
R
EGISTERS
R
EAD
AND
W
RITE
OPERATION
................................................................. 57
F
IGURE
21. D
EVICE
C
ONFIGURATION
AND
UART R
EGISTERS
R
EAD
O
PERATION
FOR
A
B
YTE
OR
DWORD ...................................... 58
F
IGURE
22. D
EVICE
C
ONFIGURATION
REGISTERS
, UART R
EGISTERS
AND
T
RANSMIT
D
ATA
B
URST
W
RITE
O
PERATION
..................... 59
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17D152IM-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR17D154 制造商:EXAR 制造商全稱:EXAR 功能描述:UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
XR17D154CV 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR17D154CV-0A-EVB 功能描述:界面開(kāi)發(fā)工具 Supports D154 144 ld TQFP, PCI Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
XR17D154CV-F 功能描述:UART 接口集成電路 3.3V-5V 64B FIFO temp 0C to 70C; UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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