RTL8881AM datasheet 5.1. PACKAGE IDENTIFICATION...........................................................................................................................................6 6. PIN DESCRIPTIONS.........................................................................................................................................................6 6.1. CONFIGURATION UPON POWER ON STRAPPING ...........................................................................................................9 6.2. SHARED I/O PIN MAPPING (DRQFN-164) .................................................................................................................11 6.3. GMAC PIN MODE DESCRIPTION ...............................................................................................................................13 6.3.1. MAC Interface MII/GMII/RGMII Mode Pin Sharing Mappings ..........................................................................13 6.3.2. GMII/RGMII Interface Pin Descriptions..............................................................................................................13 6.3.3. MII MAC Mode Interface Pin Descriptions .........................................................................................................14 6.3.4. MII PHY Mode Interface Pin Descriptions ..........................................................................................................14 7. MEMORY CONTROLLER............................................................................................................................................15 7.1. SDR DRAM CONTROL INTERFACE ...........................................................................................................................15 7.1.1. Features................................................................................................................................................................15 7.1.2. Bank2 and Bank3.........................................