82595TX Datasheet, PDF (2/59 Pages) Intel Corporation – ISA/PCMCIA HIGH INTEGRATION ETHERNET CONTROLLER

82595TX
ISA PCMCIA High Integration ETHERNET Controller
CONTENTS
PAGE
1 0 INTRODUCTION
5
1 1 82595TX Overview
5
1 2 Enhancements to the 82595
5
1 3 Compliance to Industry
Standards
5
1 3 1 Bus Interface ISA IEEE
P996 PCMCIA 2 0
6
1 3 2 ETHERNET Twisted Pair
Ethernet Interface IEEE 802 36
Specification
6
2 0 82595TX PIN DEFINITIONS
6
2 1 ISA Bus Interface
6
2 2 PCMCIA Bus Interface
8
2 3 Local Memory Interface
9
2 4 Miscellaneous Control
11
2 5 JTAG Control
11
2 6 Serial Interface
12
2 7 Power and Ground
13
2 8 82595TX Pin Summary
14
3 0 82595TX INTERNAL
ARCHITECTURE OVERVIEW
15
3 1 System Interface Overview
15
3 1 1 Concurrent Processing
Functionality
15
3 2 Local Memory Interface
15
3 3 CSMA CD Unit
16
3 4 Serial Interface
16
4 0 ACCESSING THE 82595TX
16
4 1 82595TX Register Map
16
4 1 1 IO Bank 0
17
4 1 2 IO Bank 1
18
4 1 3 IO Bank 2
19
4 2 Writing to the 82595TX
19
4 3 Reading from the 82595TX
20
CONTENTS
4 4 Local DRAM Accesses
4 4 1 Writing to Local Memory
4 4 2 Reading from Local
Memory
4 5 Serial EEPROM Interface
4 6 Boot EPROM FLASH Interface
4 7 IA PROM Interface
4 8 PCMCIA CIS Structures
4 9 PCMCIA Decode Functions
PAGE
20
20
20
21
22
22
22
22
5 0 COMMAND AND STATUS
INTERFACE
23
5 1 Command OP Code Field
23
5 2 ABORT (Bit 5)
23
5 3 Pointer Field (Bits 6 and 7)
23
5 4 82595TX Status Interface
24
6 0 INITIALIZATION
24
7 0 FRAME TRANSMISSION
25
7 1 82595TX XMT Block Memory
Format
25
7 2 XMT Chaining
27
7 3 Automatic Retransmission on
Collision
30
8 0 FRAME RECEPTION
30
8 1 82595TX RCV Memory
Structure
30
8 2 RCV Ring Buffer Operation
33
9 0 SERIAL INTERFACE
34
10 0 APPLICATION NOTES
35
10 1 Bus Interface
35
10 2 Local Memory Interface
35
10 3 EEPROM Interface (ISA Only)
35
10 4 Serial Interface
35
10 4 1 AUI Circuit
35
10 4 2 TPE Circuit
35
10 4 3 LED Circuit
36
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