- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16511 > XR19L222IL64-0B-EB (Exar Corporation)EVAL BOARD FOR XR19L202 64QFN PDF資料下載
參數(shù)資料
| 型號： | XR19L222IL64-0B-EB |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 15/53頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVAL BOARD FOR XR19L202 64QFN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | * |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
XR19L222
22
TWO CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER
REV. 1.0.1
2.19
Infrared Mode (UART Channel B Only)
The L222 includes an infrared encoder and decoder compatible to the IrDA (Infrared Data Association) version
1.0. The IrDA 1.0 standard that stipulates the infrared encoder sends out a 3/16 of a bit wide HIGH-pulse for
each “0” bit in the transmit data stream. This signal encoding reduces the on-time of the infrared LED, hence
reduces the power consumption. See Figure 12 below.
The infrared encoder and decoder are enabled by setting MCR register bit-6 to a ‘1’. When the infrared feature
is enabled, the transmit data output, TXB, idles at logic zero level. Likewise, the RX input assumes an idle level
of logic zero from a reset and power up, see Figure 12.
Typically, the wireless infrared decoder receives the input pulse from the infrared sensing diode on the RXB
pin. Each time it senses a light pulse, it returns a HIGH to the data bit stream. However, this is not true with
some infrared modules on the market which indicate a LOW by a light pulse. So the L222 has a provision to
invert the input polarity to accommodate this. In this case user can enable FCTR bit-2 to invert the input signal.
The Infrared Mode can only be used with channel B of the L222 using the TXB output and the RXB input pins..
FIGURE 12. INTERNAL LOOP BACK
TXA/
TXB
RXA/
RXB
Mod
e
m
/G
eneral
Purp
ose
Co
ntro
l
L
ogic
In
te
rn
al
Da
ta
Bus
L
in
e
s
and
Co
ntro
l
S
ignals
RTSA#/
RTSB#
MCR bit-4=1
VCC
Transmit Shift Register
(THR/FIFO)
Receive Shift Register
(RHR/FIFO)
CTSA#/
CTSB#
DTRA#/
DTRB#
DSRA#/
DSRB#
RIA#/
RIB#
CDA#/
CDB#
OP1#
RTS
CTS
DTR
DSR
RI
CD
VCC
OP2#
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A3CCH-2036M | IDC CABLE - AKC20H/AE20M/AKC20H |
| UPJ0J102MPD1TD | CAP ALUM 1000UF 6.3V 20% RADIAL |
| LBMF1608T4R7M | INDUCTOR 4.7UH 110MA 20% 0603 |
| VE-J51-EX | CONVERTER MOD DC/DC 12V 75W |
| M3AAK-1606R | IDC CABLE - MSC16K/MC16M/MSC16K |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR19L222IL64-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 |
| XR19L400 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER |
| XR19L400_09 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER |
| XR19L400IL40 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER |
| XR19L400IL40-0B-EB | 功能描述:界面開發(fā)工具 Supports L400 40 pin QFN, PCI Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。