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參數(shù)資料
| 型號(hào)： | XR17C158IV |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 66/67頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART PCI BUS OCTAL 144LQFP |
| 產(chǎn)品變化通告： | Leaded UART, V&I Obsolescence 11/Apr/2011 |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 特點(diǎn)： | * |
| 通道數(shù)： | 8 |
| FIFO's： | 64 字節(jié) |
| 規(guī)程： | RS485 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 帶自動(dòng)流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動(dòng)位檢測功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 144-LQFP |
| 供應(yīng)商設(shè)備封裝： | 144-LQFP（20x20） |
| 包裝： | 托盤 |
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XR17C158
xr
5V PCI BUS OCTAL UART
REV. 1.4.3
8
1.0 XR17C158 REGISTERS
The XR17C158 UART has three different sets of registers as shown in Figure 3. The PCI local bus
configuration space registers are for plug-and-play auto-configuration when connecting the device to the PCI
bus. This auto-configuration feature makes installation very easy into a PCI system and it is part of the PCI
local bus specification. The second register set is the device configuration registers that are accessible directly
from the PCI bus for programming general operating conditions of the device and monitoring the status of
various functions. These registers are mapped into 4K of the PCI bus memory address space. These functions
include all 8 channel UART’s interrupt control and status, 16-bit general purpose timer control and status,
multipurpose inputs/outputs control and status, sleep mode, soft-reset, and device identification and revision.
And lastly, each UART channel has its own set of internal UART configuration registers for its own operation
control and status reporting. All 8 sets of channel registers are embedded inside the device configuration
registers space, which provides faster access. The following paragraphs describe all 3 sets of registers in
detail.
1.1
PCI LOCAL BUS CONFIGURATION SPACE REGISTERS
The PCI local bus configuration space registers are responsible for setting up the device’s operating
environment in the PCI local bus. The pre-defined operating parameters of the device is read by the PCI bus
plug-and-play auto-configuration manager in the operating system. After the PCI bus has collected all data
from every device/card on the bus, it defines and downloads the memory mapping information to each device/
card about their individual operation memory address location and conditions. The operating memory mapped
address location is downloaded into the Base Address Register (BAR) register, 0x10. The plug-and-play auto
configuration feature is only available when an external 93C46 EEPROM is used. The EEPROM contains the
device vendor and sub-vendor data required by the auto-configuration setup.
FIGURE 3. THE XR17C158 REGISTER SETS
C hannel 0
IN T , M PIO ,
TIM ER ,REG
D evice C onfig ur ation and
U AR T [7:0]
C onfig ur ation
R eg ister s ar e mapped on
to the Base Addr ess
R eg ister ( BAR ) in a 4K-
byte of memor y addr ess
space
PC I Local Bus
Inter face
C hannel 0
C hannel 1
C hannel 2
C hannel 3
C hannel 4
C hannel 5
C hannel 6
C hannel 7
D evice
C onfig ur ation R eg ister s
8 channel
Inter r upts,
M ultipur pose
I/O s,
16- bit
T imer /C ounter ,
Sleep, R eset, D VID , D R EV
U AR T [7:0]
C onfig ur ation
Reg ister s
16550 C ompatible and EXAR
Enhanced
R eg ister s
PC I Local Bus
C onfig ur ation
Space
R eg ister s for Plug -
and- Play
Auto
C onfig ur ation
PCI REG S-1
Vendor
and Sub- vendor
ID
and Pr oduct M odel N umber
in Exter nal EEPR O M
0x00 00
0x02 00
0x04 00
0x06 00
0x08 00
0x0A 0 0
0x0C 00
0x0E00
0x00 80
0x0F F F
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| XR17C158IV-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 |
| XR17C158IVTR-F | 制造商:Exar Corporation 功能描述:UART 8-CH 64Byte FIFO 5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17C158IVTR-F |
| XR17D152 | 制造商:EXAR 制造商全稱:EXAR 功能描述:UNIVERSAL (3.3V AND 5V) PCI BUS DUAL UART |
| XR17D152CM | 制造商:EXAR 制造商全稱:EXAR 功能描述:UNIVERSAL (3.3V AND 5V) PCI BUS DUAL UART |
| XR17D152CM-0A-EVB | 功能描述:界面開發(fā)工具 Supports D152 100 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 |
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