參數(shù)資料
型號(hào): XR17V252IM-F
廠商: Exar Corporation
文件頁(yè)數(shù): 20/69頁(yè)
文件大?。?/td> 0K
描述: IC UART PCI BUS DUAL 100TQFP
標(biāo)準(zhǔn)包裝: 90
特點(diǎn): *
通道數(shù): 2,DUART
FIFO's: 64 字節(jié)
規(guī)程: RS485
電源電壓: 3.3V,5V
帶自動(dòng)流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動(dòng)位檢測(cè)功能:
帶調(diào)制解調(diào)器控制功能:
安裝類(lèi)型: 表面貼裝
封裝/外殼: 100-TQFP
供應(yīng)商設(shè)備封裝: 100-TQFP(14x14)
包裝: 托盤(pán)
XR17V252
27
REV. 1.0.2
66 MHZ PCI BUS DUAL UART WITH POWER MANAGEMENT SUPPORT
3.1.3
Tx FIFO Data Loading at locations 0x100 (channel 0) and 0x300 (channel 1)
The TX FIFO data (up to the maximum 64 bytes) can be loaded in a single burst 32-bit write operation
(maximum 16 DWORD writes) at memory locations 0x100 (channel 0) and 0x300 (channel 1).
3.2
FIFO DATA LOADING AND UNLOADING THROUGH THE UART CHANNEL REGISTERS, THR
AND RHR IN 8-BIT FORMAT
The THR and RHR register address for channel 0 to channel 1 is shown in Table 11 below. The THR and RHR
for each channel 0 tand 1 are located sequentially at address 0x0000 and 0x0200. Transmit data byte is
loaded to the THR when writing to that address and receive data is unloaded from the RHR register when
reading that address. Both THR and RHR registers are 16C550 compatible in 8-bit format, so each bus
operation can only write or read in bytes.
WRITE TX FIFO
BYTE 3
BYTE 2
BYTE 1
BYTE 0
Write n+0 to n+3
FIFO Data n+3
FIFO Data n+2
FIFO Data n+1
FIFO Data n+0
Write n+4 to n+7
FIFO Data n+7
FIFO Data n+6
FIFO Data n+5
FIFO Data n+4
Etc.
TABLE 11: TRANSMIT AND RECEIVE DATA REGISTER IN BYTE FORMAT, 16C550 COMPATIBLE
PCI Bus
Data Bit-31
B7
B6
B5
B4
B3
B2
B1
B0
B7
B6
B5
B4
B3
B2
B1
B0
B7
B6
B5
B4
B3
B2
B1
B0
B7
B6
B5
B4
B3
B2
B1
B0
Transmit Data Byte n+3
Transmit Data Byte n+2
Transmit Data Byte n+1
Transmit Data Byte n+0
PCI Bus
Data Bit-0
Channel 0 to 1 Transmit Data in 32-bit alignment through the Configuration Register Address
0x0100 and 0x0300
THR and RHR Address Locations For CH0 to CH1 (16C550 Com patible)
CH0
0x000 W rite THR
CH0
0x000 Read RHR
CH1
0x200 W rite THR
CH1
0x200 Read RHR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
相關(guān)PDF資料
PDF描述
MS3110E14-15S CONN RCPT 15POS WALL MNT W/SCKT
SCC2692AE1B44,557 IC UART DUAL W/FIFO 44PLCC
MS27467T13B4P CONN PLUG 4POS STRAIGHT W/PINS
MS27484T16F26S CONN PLUG 26POS STRAIGHT W/SCKT
SC26C92C1A,512 IC UART DUAL W/FIFO 44-PLCC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17V252IMTR-F 制造商:Exar Corporation 功能描述:UART 2-CH 64Byte FIFO 3.3V 100-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR17V252IMTR-F
XR17V254 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
XR17V254_08 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
XR17V254IV 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
XR17V254IV-0A-EVB 功能描述:UART 接口集成電路 Supports V254 144 ld LQFP,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