M59330P LAN Transceiver REJ03F0032-0100Z Rev.1.0 Sep.16.2003 Description The M59330P is an integrated circuit for two-line LAN transceivers, conforming to J1850 specifications. The chip incorporates bus line anomaly detection functions; anomalous behavior causes the ERR signal to go to "L". A selector causes a normal bus signal to be output to RX. By setting the standby signal to "L", a low consumption current state is maintained. At this time, the drivers BUS (+) and BUS (–) are both turned off. In standby mode, on input of "H" level to the ERR pin, error output reset occurs. Features • Conforms to SAE J1850 specifications • Internal bus line anomaly detection function Applications • LAN transceiver for automotive use, generic LAN transceiver, transceiver for other communication applications Block Diagram Rev.1.0, Sep.16.2003, page 1 of 10 M59330P Pin Configuration (Top View) Explanation of Functions Pin Deiscription Pin no. Pin name I/O Function 1 Tx I Data signal input pin 2 STB I Standby signal input pin; L: standby mode, H: normal operation 3 ERR I/O 4 5 6 Rx Vss Bus(–) O I I/O Error signal output pin and error reset input pin; on detection of anomaly in transmission channel, outputs "L" level; in standby mode, error reset on input of "H" level Pin for output of signal from transmission channel Clamping pin 7 Bus(+) I/O Pin for signal output to transmission channel and for input of signal from transmission channel (positive logic) 8 VDD I Power supply pin Pin for signal output to transmission channel and for input of signal from transmission channel (negative logic) Rev.1.0, Sep.16.2003, page 2 of 10 M59330P Transmission Channel Anomaly Detection and Communication Functions The M59330P uses driver overcurrent detection functions and transmission signal logic error detection functions to detect anomalies in the transmission channel, and outputs an error signal (ERR (pin 3) = "L" ) accordingly. Also, by switching the signal output to pin RX (pin 4) according to the anomalous state, communication is possible after anomaly occurrence. (1) Overcurrent detection The drivers of the BUS(+) pin (pin 7) and BUS(-) pin (pin 6) of the M59330P are provided with overcurrent detection circuits. When excessive current flows in a driver, the driver is turned off, and an error signal (ERR (pin 3) = "L" ) is output. When overcurrent is detected, the driver is maintained in the off state until error reset. The drivers for the BUS(+) pin (pin 7) and the BUS(-) pin (pin 6) are independent; depending on the circumstances of the anomaly, both may be turned off. A filter is incorporated to prevent erroneous operation due to transient currents when a driver is turned on, and an overcurrent state is not detected for a short period of time (several hundred ns). The detection current is set at approx. 180 mA. (2) Logical anomaly detection M59330P transmission signals operate at opposite phases, and by comparing the signals, anomalies in the transmission channel are detected. The signals are compared at a preset time relative to an edge of the signals of the transmission channels (BUS(+) , BUS(-)), and if they do not coincide, it is assumed that an anomaly has occurred in one of the transmission channels, and an error signal (ERR (pin 3) ="L") is output. When the next edge is detected within the preset time, this edge is taken as a new reference for timing, and if noncoincidence continues for longer than the preset time, an anomaly is detected. The time is set to approx. 4.2 µs. Logical anomaly detection does not support multiple error modes. When only a logical anomaly is detected, the driver is not turned off. A driver is turned off upon anomaly detection only when overcurrent is detected. Rev.1.0, Sep.16.2003, page 3 of 10 M59330P (3) Communication functions The M59330P normally outputs differential signals on BUS (+) (pin 7) and BUS (-) (pin 6), but when an anomaly is detected, switches signal output to the RX pin (pin 4) according to the anomaly state. When overcurrent is detected, an anomaly with the driver or transmission channel for which the overcurrent was detected is assumed, and an error signal is output; at the same time, the signal for the other transmission channel is output to the RX output (pin 4). As explained in (1) above, in some cases both drivers may be turned off; in such cases, the RX output (pin 4) is fixed at "L". When a logical anomaly is detected, an error signal (ERR (pin 3) = "L") is output, and at the same time the RX output (pin 4) is driven to "L". After error signal output, a transmission channel for which a transmission signal edge is detected is regarded as normal, and the signal for the channel is output to the RX output (pin 4). Overcurrent detection takes precedence over logical anomaly detection in operations to switch the error signal output and RX output. Table 1. Anomaly modes and anomaly detection functions Anomaly mode Error output Communication after anomaly detection Method of anomaly detection GND short VDD short Y Y Y Y (2) (1), (2) Open GND short Y Y Y Y (2) (1), (2) VDD short Y Y (2) 6 Open Y Y (2) 6 BUS(+), BUS(–) short Y N (1) 1 2 3 4 Bus(+) Bus(–) 5 Error Reset After standby mode is entered (the STB pin (pin 2) ="L"), the M59330P error output is reset by inputting level "H" to the ERR pin (pin 3). In this case, all operations relating to anomaly detection, such as overcurrent detection and RX output switching, are canceled. Standby Mode By driving the STB pin (pin 2) to "L" level, the M59330P can be put into a low consumption current mode. In standby mode, the driver and overcurrent detection functions do not operate, but the logical anomaly detection function continues to operate, and except for overcurrent detection, detection of anomalies is possible. However, there is only error signal output, and RX output signal switching is not performed. In standby mode, the RX output is the logical sum of the BUS(+) signal and the BUS(-) signal. Rev.1.0, Sep.16.2003, page 4 of 10 M59330P Input/Output Equivalent Circuits Rev.1.0, Sep.16.2003, page 5 of 10 M59330P Electrical Characteristics (unless otherwise noted, Ta=-40 to 85°C) Symbol Quantity Conditions IDD1 IDD2 Power supply current 1 Power supply current 2 RBUS = 105 Ω, Tx = “L”, STB = “H” RBUS = 105 Ω, Tx = “H”, STB = “H” IDD3 VTH1 VTH2 VTL |VHYSL| VCIN |VHYS8| Power supply current 3 "H" input threshold voltage 1 "H" input threshold voltage 2 "L" input threshold voltage Hysteresis width BUS input voltage range Input hysteresis width RBUS = 105 Ω, Tx = STB = “H” ERR Tx, STB Tx, STB Tx, STB BUS(+), BUS(-) BUS(+), BUS(-) differential input IIPP1 BUS(+) leakage current 1 IIPP1 BUS(+) leakage current 2 IIPP2 IIDP2 IIPM1 Rated value Min. Typ. Unit Max. 5.0 55 mA mA 200 3.2 3.5 2.8 1.0 VDD–2.0 300 µA V V V V V mV with power supply off (VDD = 0V), BUS(+) = 0V 100 µA 100 µA BUS(+) leakage current 3 BUS(+) leakage current 4 BUS(-) leakage current 1 with power supply off (VDD = 0V), BUS(+) = 5V with power supply onBUS(–) = 5V with power supply onBUS(–) = 0V with power supply off–50mA IIDM1 IIPM2 VIDM2 BUS(-) leakage current 2 BUS(-) leakage current 3 BUS(-) leakage current 4 VDROP1 VDROP2 VOH1 VOL1 VOH2 IPD Cl1 Cl2 VTH1 Driver drop voltage "H" output voltage 1 "L" output voltage 1 "H" output voltage 2 ERR pull-down current Input capacitance 1 Input capacitance 2 Ground offset voltage Rev.1.0, Sep.16.2003, page 6 of 10 2.2 2.3 1.6 0.4 Vss 70 µA –20 µA 100 100 µA with power supply off+50mA with power supply on with power supply on 100 20 100 µA µA IBUS(+) = –50mA IBUS(–) = +50mA RX pin IOH = –1mA RX pin IOL = +1mA ERR pin IOH = –1mA ERR pin VOH = 3.0V power supply OFF (VDD = 0V) power supply ON across two nodes 1.0 0.6 5.0 0.6 5.0 700 150 150 1.0 4.5 4.5 350 µA V V V V µA pF pF V M59330P Absolute Maximum Ratings (unless otherwise noted, Ta =-40 to 85°C) Symbol Quantity VDD V1 V0 lo Power supply voltage Input voltage Output voltage Driver output current Pmex Tstg Allowable power consumption Storage temperature Conditions Rated value Min. Unit Typ. Max. –0.3 –0.3 –0.3 BUS(+) BUS(–) 6.5 VDD+0.3 VDD+0.3 50 V V V mA 200 125 mW °C –50 –50 Note: All voltages use the circuit VSS pin as reference; maximum and minimum values are absolute values; and currents are positive when flowing into a circuit, and negative (preceded by a minus sign) when flowing outward. Recommended Operating Conditions (unless otherwise noted, Ta =-40 to 85°C) Symbol Quantity Conditions Rated value Min. VDD Power supply voltage RBUS BUS resistance CBUS Topr BUS capacitance Unit Typ. 4.75 transmission rate = 41.6Kbps 105 transmission rate = 125Kbps 105 5.25 V Ω transmission rate = 41.6Kbps RBUS = 378 Ω transmission rate = 125Kbps, RBUS = 378 Ω Operating ambient temperature Max. 10000 pF 3000 –40 85 °C Timing Characteristics (unless otherwise noted, Ta = 25°C, VDD=5.0 V, during normal operation) Symbol Quantity Conditions Rated value TdTBr TX → BUS output delay time CBUS = 10000pF, RBUS = 378 Ω transmission rate =41.6Kbps 0.25 µs TdTRr TX → RX rise delay time CBUS = 10000pF, RBUS = 378 Ω transmission rate =41.6Kbps 0.6 µs TdBRf TX → RX fall delay time 3.0 µs TdBRr TdBRf BUS → RX rise delay time BUS → RX fall delay time CBUS = 10000pF, RBUS = 378 Ω transmission rate =41.6Kbps transmission rate = 41.6Kbps transmission rate = 41.6Kbps 0.35 0.33 TwS TsS ThS TwE Minimum STB input pulse width STB input setup time STB input hold time ERR input pulse width standby mode on error reset on error reset on error reset µs µs µs µs Min. Rev.1.0, Sep.16.2003, page 7 of 10 3.0 1.0 100 200 Typ. Unit Max. ns ns M59330P Timing Charts Timing Waveforms Error Reset Timing Rev.1.0, Sep.16.2003, page 8 of 10 M59330P Application Circuit Example (One implementation example, which should be studied carefully) Example Of Transmission Channel Connection Peripheral Circuit Example Note: As surge protection, it is recommended that a Zener diode with VZ = approx. 7 V be used. In order to prevent malfunctions due to noise or other causes, it is recommended that an external capacitor be connected between the power supply pin and ground. Rev.1.0, Sep.16.2003, page 9 of 10 JEDEC Code − SEATING PLANE EIAJ Package Code DIP8-P-300-2.54 MMP b1 e 4 1 D 5 8 Weight(g) 0.5 b2 Lead Material Cu Alloy b A L E A2 Rev.1.0, Sep.16.2003, page 10 of 10 A1 8P4 c A A1 A2 b b1 b2 c D E e e1 L Symbol Dimension in Millimeters Min Nom Max − − 4.5 − − 0.51 − − 3.3 0.4 0.5 0.59 1.4 1.5 1.8 0.9 1.0 1.3 0.23 0.25 0.35 9.1 8.9 8.7 6.15 6.3 6.45 − − 2.45 − − 7.62 − − 3.0 − 15˚ 0° Plastic 8pin 300mil DIP M59330P Package Dimensions e1 Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. 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