RTL8019AS Datasheet RTL8019AS RTL8019AS-LF Realtek Full-Duplex Ethernet Controller with Plug and Play Function (RealPNP) DATASHEET REALTEK SEMICONDUCTOR CO., LTD. HEAD OFFICE NO. 11, INDUSTRY E. RD. IX, SCIENCE-BASED INDUSTRIAL PARK, HSINCHU 30077, TAIWAN, R.O.C. TEL:886-35-780211 FAX:886-35-776047 OFFICE 3F, NO. 56, WU-KUNG 6 RD., TAIPEI HSIEN, TAIWAN, R.O.C. TEL: 886-2-2980098 FAX: 886-2-2980094, 2980097 2005-08-26 1RTL8019AS Datasheet CONTENTS 1. FEATURES 3 2. GENERAL DESCRIPTION 4 3. PIN CONFIGURATION 5 3.1.Package Identification 5 4. PIN DESCRIPTION 4.1. Power Pins 6 4.2. ISA Bus Interface Pins 6 4.3. Memory Interface Pins (including BROM, EEPROM) 7 4.4. Medium Interface Pins 8 4.5. LED Output Pins 8 5. REGISTER DESCRIPTIONS 5.1. Group 1: NE2000 Registers 9 5.1.1. Register Table 9 5.1.2. Register Functions 11 5.1.2.1. NE2000 Compatible Registers 11 5.1.2.2. RTL8019AS Defined Registers 16 5.2. Group 2: Plug and Play (PnP) Registers 23 5.2.1. Card Control Registers 24 5.2.2. Logical Device Control Registers 25 5.2.3. Logical Device Configuration Registers 25 6. FUNCTIONAL DESCRIPTIONS 6.1. RTL8019AS Configuration Modes 27 6.2. Plug and Play 29 6.2.1. Initiation Key 29 6.2.2. Isolation Protocol 30 6.2.3. Plug and Play Isolation Sequence 34 6.2.4. Reading Resource Data 35 6.2.5. PnP auto detect mode 36 6.3. 9346 Contents 37 6.4. Boot ROM 38 6.5. LED Behaviors 40 6.6. Loopback Diagnostic Operation 42 6.6.1. Loopback Operation 42 6.6.2. To implement Loopback Test 43 7. Electrical Specification and Timings 7.1. Absolute Maximum Ratings 46 7.2. D.C. Characteristics 46 7.3. A.C. Timing Characteristics 47 7. Ordering Information 7.1. Ordering Information 51 2005-08-26 2