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X9521 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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X9521 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 24 page  FN8207 Rev 2.00 Page 1 of 24 September 21, 2010 FN8207 Rev 2.00 September 21, 2010 X9521 Dual DCP, EEPROM Memory Fiber Channel/Gigabit Ethernet Laser Diode Control for Fiber Optic Modules DATASHEET FEATURES • Two Digitally Controlled Potentiometers (DCP’s) —100 Tap - 10k —256 Tap - 100k —Non-Volatile —Write Protect Function • 2kbit EEPROM Memory with Write Protect & Block LockTM • 2-Wire industry standard Serial Interface —Complies to the Gigabit Interface Converter (GBIC) specification • Single Supply Operation —2.7V to 5.5V • Hot Pluggable • 20 Ld TSSOP DESCRIPTION The X9521 combines two Digitally Controlled Potentiom- eters (DCP’s), and integrated EEPROM with Block LockTM protection. All functions of the X9521 are accessed by an industry standard 2-Wire serial interface. The DCP’s of the X9521 may be utilized to control the bias and modulation currents of the laser diode in a Fiber Optic module. The 2kbit integrated EEPROM may be used to store module definition data. The features of the X9521 are ideally suited to simplifying the design of fiber optic modules which comply to the Gigabit Interface Converter (GBIC) specification. The in- tegration of these functions into one package significantly reduces board area, cost and increases reliability of laser diode modules. BLOCK DIAGRAM DATA REGISTER COMMAND DECODE & CONTROL LOGIC SDA SCL CONSTAT REGISTER PROTECT LOGIC EEPROM THRESHOLD RESET LOGIC 4 2kbit 8 7 - BIT NONVOLATILE MEMORY RH1 RW1 RL1 WIPER REGISTER RH2 RW2 RL2 COUNTER WP 8 - BIT NONVOLATILE MEMORY WIPER REGISTER COUNTER ARRAY NOT RECOMMENDED FOR NEW DESIGNS POSSIBLE SUBSTITUTE PRODUCT X95820, ISL22326, ISL22329, ISL22323 |
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