SJA1000T/N1,112

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Philips Semiconductors Product specification

3. TNX is the on-chip output transistor X, connected to V

4. TXX is the serial output level on pin TX0 or TX1. It is required that the output level on the CAN-bus line is dominant

when TXD = 0 and recessive when TXD = 1.

DRIVE TXD OCTPX OCTNX OCPOLX TPX

polarity programmed by OCPOL.

The clock divider register controls the CLKOUT frequency

for the microcontroller and allows to deactivate the

CLKOUT pin. Additionally a dedicated receive interrupt

is not influenced.

The reserved bit (CDR.4) will always reflect a logic 0.

The application software should always write a logic 0 to

may be 1-active using this bit.

Table 49 Bit interpretation of the clock divider register (CDR); CAN address 31

Note

1. This bit cannot be written. During read-out of this register always a zero is given.

CAN mode CBP RXINTEN (0)

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Philips Semiconductors Product specification

The bits CD.2 to CD.0 are accessible without restrictions in reset mode as well as in operating mode. These bits are used

to define the frequency at the external CLKOUT pin. For an overview of selectable frequencies see Table 50.

Table 50 CLKOUT frequency selection; note 1

6

8

f

mode, otherwise it is HIGH.

This bit allows the TX1 output to be used as a dedicated

receive interrupt output. When a received message has

interrupt pulse with the length of one bit time is always

output at the TX1 pin (during the last bit of end of frame).

The transmit output stage should operate in normal output

mode. The polarity and output drive are programmable via

external transceiver circuit. The internal delay of the

possible bus length. If CBP is set, only RX0 is active. The

(e.g. V

CDR.7 defines the CAN mode. If CDR.7 is at logic 0 the

CAN controller operates in BasicCAN mode. If set to

logic 1 the CAN controller operates in PeliCAN mode.

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Philips Semiconductors Product specification

In accordance with the Absolute Maximum Rating System (IEC 134); all voltages referenced to V

.

current must not exceed 10 mA for each TX output.

2. This value is based on the maximum allowable die temperature and the thermal resistance of the package, not on

device power consumption.

3. Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kΩ resistor.

4. Machine model: equivalent to discharging a 200 pF capacitor through a 25 Ω plus 2.5 µH circuit.

8 THERMAL CHARACTERISTICS

9 DC CHARACTERISTICS

V

, I

note 1 −−20 mA

note 4 −200 +200 V