參數(shù)資料
型號(hào)： XR17C154
廠商： Exar Corporation
英文描述： Tip, Offset Tapered Needle, 1mm Diameter
中文描述： 四5V的PCI總線的UART
文件頁(yè)數(shù)： 60/62頁(yè)
文件大?。?/td> 721K
代理商： XR17C154
XR17C154
5V PCI BUS QUAD UART
REV. P1.3.0
á
PRELIMINARY
I
TABLE OF CONTENTS
GENERAL DESCRIPTION ............................................................................................... 1
A
PPLICATIONS
........................................................................................................................................... 1
F
EATURES
................................................................................................................................................. 1
Figure 1. Block Diagram ....................................................................................................................... 1
Figure 2. Pin Out of the Device ............................................................................................................ 2
ORDERING
INFORMATION
............................................................................................................................ 2
PIN DESCRIPTIONS ....................................................................................................... 3
FUNCTIONAL DESCRIPTION ......................................................................................... 6
PCI Local Bus Interface ...................................................................................................................................... 6
1.0 XR17C154 Registers .............................................................................................................................. 7
1.1 PCI LOCAL BUS CONFIGURATION SPACE REGISTERS ....................................................................................... 7
Figure 3. The XR17C154 Register Sets ................................................................................................ 7
T
ABLE
1: PCI L
OCAL
B
US
C
ONFIGURATION
S
PACE
R
EGISTERS
................................................................. 8
1.2 D
EVICE
CONFIGURATION
R
EGISTER
S
ET
........................................................................................................................ 9
T
ABLE
2: XR17C154 D
EVICE
C
ONFIGURATION
R
EGISTERS
...................................................................... 10
T
ABLE
3: D
EVICE
C
ONFIGURATION
R
EGISTERS
SHOWN
IN
BYTE
ALIGNMENT
............................................ 11
T
ABLE
4: D
EVICE
C
ONFIGURATION
R
EGISTERS
SHOWN
IN
DWORD
ALIGNMENT
....................................... 11
1.2.1 The Interrupt Status Register ................................................................................................. 12
Figure 4. The Global Interrupt Register, INT0, INT1, INT2 and INT3 ............................................... 13
T
ABLE
5: UART C
HANNEL
[3:0] I
NTERRUPT
S
OURCE
E
NCODING
............................................................. 13
T
ABLE
6: UART C
HANNEL
[3:0] I
NTERRUPT
C
LEARING
........................................................................... 13
1.2.2 General Purpose 16-bit Timer/Counter [TIMERMSB, TIMELSB, TIMER, TIMECNTL] (default
0xXX-XX-00-00) .............................................................................................................................. 14
Figure 5. Timer/Counter circuit. ......................................................................................................... 14
T
ABLE
7: TIMER CONTROL R
EGISTERS
............................................................................................... 14
1.2.3 8XMODE [7:0] (default 0x00) ................................................................................................. 15
1.2.4 REGA [15:8] Reserved ........................................................................................................... 15
1.2.5 RESET [23:16] (default 0x00) ................................................................................................ 15
1.2.6 SLEEP [31:24]..................................................................................................(default 0x00) 16
1.2.7 Device Identification and Revision ......................................................................................... 16
1.2.9 Multi-Purpose Inputs and Outputs .......................................................................................... 17
1.2.10 MPIO REGISTER ................................................................................................................. 17
1.2.8 REGB Register ....................................................................................................................... 17
Figure 6. Multipurpose input/output internal circuit ........................................................................ 18
2.0 CRYSTAL OSCILLATOR / BUFFER .................................................................................................... 20
Figure 7. Typical oscillator connections ........................................................................................... 20
Figure 8. External Clock Connection for Extended Data Rate ........................................................ 20
3.0 Transmit and Receive Data ................................................................................................................. 21
3.1 DATA LOADING AND UNLOADING VIA 32-BIT PCI BURST TRANSFERS ........................................................... 21
3.1.1 Normal Rx FIFO Data Unloading at locations 0x100, 0x300, 0x500, 0x700 .......................... 21
3.1.2 Special Rx FIFO Data Unloading at locations 0x180, 0x380, 0x580, and 0x780 .................. 22
3.1.3 Tx FIFO Data Loading at locations 0x100, 0x300, 0x500, 0x700 ......................................... 22
3.2 FIFO DATA LOADING AND UNLOADING THROUGH THE UART CHANNEL REGISTERS, THR AND RHR IN 8-BIT
FORMAT ......................................................................................................................................................................... 23
T
ABLE
8: T
RANSMIT
AND
R
ECEIVE
D
ATA
R
EGISTER
IN
B
YTE
FORMAT
, 16C550
COMPATIBLE
.................... 23
4.0 UART ..................................................................................................................................................... 24
4.1 P
ROGRAMMABLE
B
AUD
R
ATE
G
ENERATOR
.................................................................................................................. 24
Figure 9. Baud Rate Generator ........................................................................................................... 24
4.2 T
RANSMITTER
............................................................................................................................................................. 25
4.2.1 Transmit Holding Register (THR) - Write-Only ....................................................................... 25
4.2.2 Transmitter Operation in non-FIFO mode .............................................................................. 25
T
ABLE
9: T
YPICAL
DATA
RATES
WITH
A
14.7456 MH
Z
CRYSTAL
OR
EXTERNAL
CLOCK
AT
16X S
AMPLING
. 25
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XR17C154_05 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:5V PCI BUS QUAD UART
XR17C154CV 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
XR17C154CV-0A-EVB 功能描述:UART 接口集成電路 Supports C154 144 ld TQFP, PCI Interface 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
XR17C154CV-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
XR17C154CVTR-F 制造商:Exar Corporation 功能描述:UART 4-CH 64Byte FIFO 5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17C154CVTR-F
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