Cirrus-logic CS8952 Manual de usuario descargar pdf (Pagina 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 kΩ). Other values may be set by

tying them directly to VDD_MII or VSS, or through external 10 kΩ 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

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 80 81

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Cirrus-logic CS8952 Manual de usuario Pagina 72