Cirrus Logic CS8952 - Manual (Page 32)

CS8952
CrystalLAN™ 100BASE-X and 10BASE-T Transceiver 32
DS206F1
9 Restart Auto-Neg Read/Set 0 Setting this bit causes auto-negotiation to be
restarted. It is an Act-Once bit which is cleared once
auto-negotiation has begun. Clearing this bit has no
effect on the auto-negotiation process.
8 Duplex Mode R/W If auto-negotiation
is enabled via the
AN[1:0] pins, reset
to 0; otherwise,
reset to 1 When bit 12 is clear, this bit controls the Full-
Duplex/Half-Duplex operation of the part. When set,
the part is configured for Full-Duplex operation, and
when clear the part is configured for Half Duplex
operation. The setting of this bit is superseded by
auto-negotiation, and thus has no effect if bit 12 is
set.
7 Collision Test R/W 0 When set, the COL pin will be asserted within 10 bit
times in response to the assertion of TX_EN. Upon
the deassertion of TX_EN, COL will be deasserted
within 4 bit times. When Collision Test is clear, COL
functions normally.
6:0 Reserved Read Only 000 0000
BIT NAME TYPE RESET DESCRIPTION