83C694 ETC, 83C694 Datasheet - Page 18

• Manufacturer Part Number: 83C694
• Description: TWISTED PAIR INTERFACE AND MACHESTER ENCODER/DECODER
• Manufacturer: ETC

PIN DESCRIPTION
NUMBER
PIN
43
44
TPR-
TPR+
MNEMONIC
TABLE 3-1. PIN DESCRIPTION cont.
Twisted-Pair
Receive
SIGNAL NAME
I/O
I
In 10BaseT mode, Manchester encoded data
is received via TPR+/TPR-. After timing re-
covery and decoding it is output to the con-
troller on RXD. TPR+/TPR- are connected to
the twisted-pair medium through a trans-
former and filter.
A 100 termination resistor is generally used
before the circuit connects to the receive sig-
nal lines, TPR+ and TPR- inputs. See Figure
2-5 for information on this design.
The 83C694D automatically corrects for a
misconnection of the + and - interface allow-
ing operation without having to correct the
wiring.
DESCRIPTION
83C694D
15