P80C592 Philips Semiconductors, P80C592 Datasheet - Page 97

• Manufacturer Part Number: P80C592
• Description: 8-bit microcontroller with on-chip CAN
• Manufacturer: Philips Semiconductors

Philips Semiconductors
22.2.4
Using an optical medium provides the following
advantages:
An example for an interface to an optical connector is
given in Fig.40. In most cases a transistor is required to
amplify the TX-output current.
1996 Jun 27
handbook, full pagewidth
Bus nodes are galvanically decoupled.
Optical cable features very high noise immunity.
No noise emission by the bus cable.
8-bit microcontroller with on-chip CAN
C
ONNECTION TO AN
O
PTICAL
OUTPUT CONTROL REGISTER
BS170
T1
5 V
B
or 00010110B (16H)
US
00011110B (1EH)
CTX0
R1
56
L
INE
CONNECTOR
3.9 k
HBFR - 0501
R2
OPTICAL
Fig.40 Optical Transceiver.
SERIES
PASSIVE OPTICAL STAR
CTX1
5 V
P8xC592
97
Thus more optical power is provided to compensate for
losses in the optical connectors and the optical star. The
P8xC592 features an on-chip
output so only a capacitor is required for the receiver part.
Two optical fibres are used to connect the bus nodes. The
TX-fibre transfers the output signal of the CAN-controller
to the optical star. The optical star transfers the TX-fibre
input signal over to all the RX-fibres. The RX-fibres
transfer the resulting optical signal over to the receivers of
all the bus nodes.
optical
cable
CRX0
100 nF
C2
CRX1
REFOUT
MGA189
C1
10 nF
1
2
AV
DD
Product specification
reference voltage
P8xC592