PRELIMINARY
TXD+0–7, TXD–0–7 (TXD+0–3, TXD–0–3)
Transmit Data
Output
10BASE-T port differential drivers (4 or 8 ports).
TXP+0–7, TXP–0–7 (TXP+0–3, TXP–0–3)
Transmit Predistortion
Output
10BASE-T transmit waveform predistortion control
differential outputs (4 or 8 ports).
X1
Crystal 1
Crystal Connection
The internal clock generator uses a 20 MHz crystal at-
tached to pins X1 and X2. Alternatively, an external
20MHz CMOS clock signal can be used to drive this
pin.
X2
Crystal 2
Crystal Connection
The internal clock generator uses a 20 MHz crystal at-
tached to pins X1 and X2. If an external clock source is
used, this pin should be left unconnected.
Am79C982
1–11