following items represent permanent changes specification CS8130 trans
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CS8130 Rev. Addendum DS134PP2 Data Sheet
following items represent permanent changes specification CS8130 transceiver. Silicon Revision Register (Register reads 0010, indicating silicon. very important that software drivers read this register determine correct version driver install. default receive sensitivity setting changed 00011 (Register resets 0011). Oscillator power mode default condition after reset (Register resets 0100). BLKR (Register blocks output data during those periods when transmit LEDs This prevents UART/system reading transmitted data. re-enable signal receiver delayed from when LEDs turned off. block data, allow data through during transmission. This goes upon RESET. additional control added which causes CS8130 receiver ignore falling edge pulse. This called ENPOS, Register ENPOS normally should cause falling edge ignored. This result greater range IrDA high-frequency (Sharp 500kHz) modes. ENPOS should low-frequency amplitude modulated modes. IrDA/HP-SIR pulse width modes, additional control bits have been added: THIN (Register allows minimum acceptable pulse width reduced from 0.5µs when This effect only when receiver programmed mode (fixed 1.6µs pulses only) (receive 1.6µs 3/16 cell pulses). WIDE (Register expands maximum allowable pulse width 9/16 cell when This effect only when receiver mode (fixed 1.6µs pulses only). normal IrDA operation, recommended that THIN WIDE Under these conditions, qualification boundaries receiver mode (receive 1.6µs 3/16 cell pulses) identical qualification boundaries receiver mode (fixed 1.6µs pulses only).
DS134PP2-A CS8130 Addendum Page
remote receive mode hesitate been added (Register D3). When this will remain high until first valid signal detected. that time, will output serial data specified baud rate until receiver disabled (Register D1). this will immediately continuously output data. This resets transmit carrier frequency formula changed: MD=(3.6864E6/FR)-2 where Modulator Divider Value desired modulation frequency (Register 11). RESET default value yielding default carrier frequency kHz. Receive Choices valid incoming frequency range (with RATS 431kHz 609kHz. RATS register control receive data frequency window period now: T(min) [(2*MD)+3+RATS]*135ns T(max) [(2*MD)+3+(6*(RATS+1))]*135ns There delay least carrier cycles between receiving amplitude modulated carrier changing (Rev Clarification: IrDA/HP-SIR baud rate 1200 bps. Specifications following tables replace those found June CS8130 data sheet (DS134PP2).
POWER SUPPLY SPECIFICATIONS 25°C; 3.0V, Digital Input Levels: Logic Logic Note Parameter Symbol Units Power Supply Voltage Power Supply Current functions enabled (Note Power Supply Current functions disabled (Note Power Supply Current Receiver only enabled (Note Power Supply Current Transmit only enabled (Note Oscillator Power Supply Current power mode: 0.45 normal power mode: Data State Retention Supply Voltage Notes: Power supply current specifications with supply 3.0V. approximate consumption +5.0V, multiply above currents 1.667. Oscillator power mode; does include current. Subtract oscillator current using external clock CS8130. Floating digital inputs will cause power supply increase beyond specification. Does include current, does include oscillator current power mode.
DS134PP2-A
CS8130 Addendum Page
RECEIVER CHARACTERISTICS 3.0V, Digital Input Levels: Logic Logic unless otherwise specified) Parameter Symbol Units Input capacitance (Note Input noise current pA/rtHz Maximum signal input current from detector Maximum input current (typically sunlight) Input current detection thresholds RS4-0=00010: (Programmable with value) RS4-0=00011: (Note RS4-0=00101: RS4-0=00111: RS4-0=11111: Bandpass filter response High Pass -3dB: Pass -3dB: Receiver power-up time With high (100µA) ambient With normal (2µA) ambient Turn-around time, with receiver continuously (Note Notes: Typical diode junction capacitance 50pF. temperature coefficient receiver threshold setting low. Current detection thresholds above ambient condition. Settings RS4-0 less than 00010 practical because noise. threshold settings roughly linear following formula: Threshold (nA) setting Turn-around time time taken diode receiver recover from energy from local transmitter. remote link must wait this time after receiving data before transmitting reply. This time reduced good shielding from transmit diode. TRANSMITTER DRIVER CHARACTERISTICS 3.0V, Digital Input Levels: Logic Logic unless otherwise specified) Parameter Output capacitance (Note Output rise time (10% 90%) Output fall time (90% 10%) Overshoot over final current resistance leakage current Notes: Typical junction capacitance 20pF. Symbol Units
RECOMMENDED OPERATING CONDITIONS (All voltages with respect Parameter Operating Ambient Temperature Data State Retention Temperature Power Down) Symbol Units
DS134PP2-A
CS8130 Addendum Page
DIGITAL CHARACTERISTICS 25°C, Supply 3.0V) Parameter High-level Input Voltage Low-level Input Voltage High-level Output Voltage -2.0mA Low-level Output Voltage 2.0mA Output Leakage Current Hi-Z state Input Leakage Current Output Capacitance Input Capacitance Symbol VD-0.3 (Digital Inputs) COUT Units
ABSOLUTE MAXIMUM RATINGS (All voltages with respect Parameter Symbol Power Supplies Input Current Except Supply Pins Driver Pins Input Voltage Output Current (each driver) (Note Ambient temperature (Power Applied) Storage Temperature using human body model (100pF with series 1.5k) Notes: duty cycle, pulse width 19.5 (3/16 (1/9600 bps)). Warning: -0.3 -0.3 2000 VD+0.3 +125 +150 Units
Operation beyond these limits result permanent damage device. Normal operation guaranteed these extremes.
SWITCHING CHARACTERISTICS 3.0V, Digital Input Levels: Logic Logic unless otherwise specified) Parameter Symbol Units XTALIN/EXTCLK frequencies CLKFR low: 3.6864 (Note CLKFR high: 1.8432 EXTCLK duty cycle input) Crystal Oscillator start time Notes: normal oscillator mode, crystal internally loaded with which standard loading which crystal frequency tuned. power oscillator mode, internal loading crystal reduced approximately 5pF. crystal frequency will therefore increase about 0.03% power mode.
technical help using CS8130, contact: Brent Wilson, 3554, bww@crystal.cirrus.com pricing delivery questions contact your local Crystal representative Keith Cheney, 3441, kcheney@crystal.cirrus.com
DS134PP2-A
CS8130 Addendum Page
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