05W799A IrDA SIR, FIR Controller IC BU92002GU Dimension (Unit : mm) Description BU92002GU is FIR(4Mbps) compatible IrDA controller IC. Built-in 5kbyte FIFO enables simple system design in correspondence with interrupt by a frame unit. (DMA is not used.) It is accessible as memory device of bus connection and can acquire a large quantity of data with a 16bit width data bus instantaneously. 5.0 5.0 8 7 6 5 4 321 A B C D E F G H 0.23 0.75 1.2Max. 0.5 VBGA063T050 Features 1) Data transfer speed FIR(4Mbps) SIR(2.4 to 115.2kbps) compatible 2) Built-in FIFO buffer 5kbyte 3) Data bus 16bit width Applications Mobile phone, printer, DSC, DVD/HDD recorder, LCD-TV, PDP-TV, projector, portable audio equipments, etc. Absolute Maximum Ratings (Ta=25˚C) Symbol Limits Power supply voltage VDD -0.3 ~ +2.5 V Power dissipation Storage temperature range Tstg 570 -25 ~ +85 -40 ~ +100 mW Operating temperature range Pd Topr Parameter Unit ˚C ˚C 2005 11 Recommended Operating Conditions (Ta=25˚C) Parameter Symbol Min. Typ. Max. Unit Power supply voltage VDD 1.62 1.8 1.98 V Interface power supply voltage VIO 1.62 3.0 3.6 V Electrical characteristics (Unless otherwise noted; Ta=25˚C, VDD=1.8V) Parameter Symbol Min. Typ. Max. Unit Conditions Current consumption 1 IDD1 – 0.1 3.0 mA No output load, All inputs=0V Current consumption 2 IDD2 – 5.0 10.0 mA CLK=48MHz – – V Digital high level input voltage VIH Digital low level input voltage VIL – – Digital high level input current IIH – – 10 mA Input voltage=VIO Digital low level input current IIL – – 10 mA Input voltage=GND Digital high level output voltage VOH VIO-0.6 – – V IOH=-1mA Digital low level output voltage VOL – – 0.6 V IOL=1mA V Application Circuit VDD IrDA PWDOWN D0~15 16 A1~3 SIR(115kbps) Register control /status Asynchronous DEC CS INTR RPM971etc. FIR(4Mbps) RD WR 3/16 DEM CPU I/F Receiver shift register (S/P) 16 CRC DEC 4PPM DEC Preamble/ Flag detection IrRX 16 VCC GND RESET 16 PWDN 16 Transmitterreceiver FIFO buffer 16 SIR(115kbps) Transmitter shift register (P/S) CRC ENC Asynchronous ENC 3/16 MOD FIR(4Mbps) XIN / CLK48M XOUT Crystal I/F Baud rate generator 4PPM ENC GND Preamble/ Flag insertion IrTX