- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16512 > XR17C152CM-0A-EVB (Exar Corporation)EVAL BOARD FOR XR17C152 100TQFP PDF資料下載
參數(shù)資料
| 型號： | XR17C152CM-0A-EVB |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 24/62頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVAL BOARD FOR XR17C152 100TQFP |
| 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頁當(dāng)前第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頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁
XR17C152
á
5V PCI BUS DUAL UART
REV. 1.2.0
30
4.5
Infrared Mode
Each UART in the 152 includes the infrared encoder and decoder compatible to the IrDA (Infrared Data
Association) version 1.0. The input pin ENIR conveniently activates both UART channels to start up in the
infrared mode. This global control pin enables the MCR bit-6 function in every UART channel register. After
power up or a reset, the software can overwrite MCR bit-6 if so desired. ENIR and MCR bit-6 also disable its
receiver while the transmitter is sending data. This prevents the echoed data from going to the receiver. The
global activation ENIR pin prevents the infrared emitter from turning on and drawing large amount of current
while the system is starting up. When the infrared feature is enabled, the transmit data outputs, TX[1:0], would
idle at logic zero level. Likewise, the RX[1:0] inputs assume an idle level of logic zero.
The infrared encoder sends out a 3/16 of a bit wide 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 15 below.
The infrared decoder receives the input pulse from the infrared sensing diode on RX pin. Each time it senses a
light pulse, it returns a logic zero to the data bit stream. The RX input signal may be inverted prior delivered to
the input of the decoder via internal register setting. This option supports active low instead of normal active
high pulse from some infrared modules on the market.
FIGURE 15. INFRARED TRANSMIT DATA ENCODING AND RECEIVE DATA DECODING
C haracter
D ata B its
St
a
rt
St
o
p
00
0
11
1
TX D ata
Transm it
IR Pulse
(TX P in)
Bit Tim e
1/2 B it Tim e
3/16 B it Tim e
IrEncoder-1
Character
D ata Bits
St
a
rt
St
o
p
00
0
11
1
Bit Tim e
1/16 C lock D elay
IRdecoder-1
RX Data
Receive
IR Pulse
(R X pin)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-J52-EX | CONVERTER MOD DC/DC 15V 75W |
| SI3056SSI2-EVB | BOARD EVAL SI3056/SI3010 SSI |
| 6828281-2 | CA 62.5 SC DUP-MTRJ OR SECURE |
| RHS0E152MCN1GS | CAP ALUM 1500UF 2.5V 20% SMD |
| RBM15DTKD-S288 | CONN EDGECARD 30POS .156 EXTEND |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR17C152CM-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 |
| XR17C152IM | 制造商:EXAR 制造商全稱:EXAR 功能描述:5V PCI BUS DUAL UART |
| XR17C152IM-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 |
| XR17C154 | 制造商:EXAR 制造商全稱:EXAR 功能描述:5V PCI BUS QUAD UART |
| XR17C154_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:5V PCI BUS QUAD UART |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。