TJA1041 데이터 시트보기 (PDF) - Philips Electronics

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TJA1041

High speed CAN transceiver

Philips Electronics 

Philips Semiconductors

High speed CAN transceiver

Product specification

TJA1041

handbook, full pagewidth

PWON / LISTEN-

ONLY MODE

STB = H

and

EN = H

STB = H

and

EN = L

NORMAL

MODE

STB = H

and

EN = L

STB = H

and

EN = L

STB = H

and

EN = H

STB = H

and

EN = H

STB = L

and

(EN = L or flag set)

STB = L

and

EN = L

STB = L and EN = H

and

flags cleared

STB = L

and

EN = H

STANDBY

MODE

STB = H and EN = L

and

UVNOM cleared

STB = L

and

flag set

STB = L and EN = H

and

flags cleared

STB = L

and

(EN = L or flag set)

SLEEP

MODE

GO-TO-SLEEP

COMMAND

MODE

flags cleared

and

t > th(min)

STB = H and EN = H

and

UVNOM cleared

LEGEND:

= H, = L

flag set

flags cleared

logical state of pin

setting pwon and/or wake-up flag

pwon and wake-up flag both cleared

MGU983

Fig.3 Mode transitions when VCC, VI/O and VBAT are present.

NORMAL MODE

Normal mode is the mode for normal bi-directional CAN

communication. The receiver will convert the differential

analog bus signal on pins CANH and CANL into digital

data, available for output to pin RXD. The transmitter will

convert digital data on pin TXD into a differential analog

signal, available for output to the bus pins. The bus pins

are biased at 0.5VCC (via Ri(cm)). Pin INH is active, so

voltage regulators controlled by pin INH (see Fig.4) will be

active too.

PWON/LISTEN-ONLY MODE

In pwon/listen-only mode the transmitter of the transceiver

is disabled, effectively providing a transceiver listen-only

behaviour. The receiver will still convert the analog bus

signal on pins CANH and CANL into digital data, available

for output to pin RXD. As in normal mode the bus pins are

biased at 0.5VCC, and pin INH remains active.

STANDBY MODE

The standby mode is the first-level power saving mode of

the transceiver, offering reduced current consumption.

In standby mode the transceiver is not able to transmit or

receive data and the low-power receiver is activated to

monitor bus activity. The bus pins are biased at ground

level (via Ri(cm)). Pin INH is still active, so voltage

regulators controlled by this pin INH will be too.

2003 Feb 13

7

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