Cirrus Logic CS8952 - Manual (Page 72)

CS8952
CrystalLAN™ 100BASE-X and 10BASE-T Transceiver 72
DS206F1
Auto-Negotiation may also be enabled and the advertised capabilities modified under software control
through bit 8 of the Basic Mode Control Register (address 00h), and bits 5, 6, 7, 8, and 10 of the Auto-
Negotiation Advertisement Register (address 04h).
These pins are pulled to ‘M’ through weak internal resistors (> 150 k Ω). Other values may be set by
tying them directly to VDD_MII or VSS, or through external 10 k Ω pull-up or pull-down resistors.
1 M 10 Mb/s Forced Full
M 0 100 Mb/s Forced Half
M 1 100 Mb/s Forced Full
M M 100/10 Mb/s Auto-Neg Full/Half
0 0 10 Mb/s Auto-Neg Half
0 1 10 Mb/s Auto-Neg Full
1 0 100 Mb/s Auto-Neg Half
1 1 100 Mb/s Auto-Neg Full
AN1 pin AN0 pin Speed Forced/Auto Full/Half Duplex