ax88796 ASIX Electronics Corporation, ax88796 Datasheet - Page 5

• Manufacturer Part Number: ax88796
• Description: Non-pci 8/16-bit 10/100m Fast Ethernet Controller With Embedded Phy
• Manufacturer: ASIX Electronics Corporation

1.0 Introduction
1.1 General Description:
The AX88796 provides industrial standard NE2000 registers level compatible instruction set. Various drivers are easy
acquired, maintenance and usage. No much additional effort to be paid. Software is easily port to various embedded
systems with no pain and tears
The AX88796 Fast Ethernet Controller is a high performance and highly integrated local CPU bus Ethernet Controller
with embedded 10/100Mbps PHY/Transceiver and 8K*16 bit SRAM. The AX88796 supports both 8 bit and 16 bit local
CPU interfaces include MCS-51 series, 80186 series, MC68K series CPU and ISA bus. The AX88796 implements both
10Mbps and 100Mbps Ethernet function based on IEEE802.3 / IEEE802.3u LAN standard. The AX88796 also provides
an extra IEEE802.3u compliant media-independent interface (MII) to support other media applications. Using MII
interface, Home LAN PHY type media can be supported.
As well as, the chip also provides optional Standard Print Port ( parallel port interface ), can be used for printer server
device or treat as simple general I/O port. The chip also support upto 3/1 additional General Purpose In/Out pins
The main difference between AX88796 and AX88195 are : 1) Embedded packet buffer memory 2) Built-in 10/100Mbps
PHY/Transceiver 3) Replace memory I/F with PHY/Transceiver I/F. 4) Canceling SAX address decoding. 5) Fix
interrupt status can’t always clean up problem of AX88195. 6) Add upto 3/1 general Purpose In/Out pins.
AX88796 use 128-pin LQFP low profile package, 25MHz operation, and single 3.3V operation with 5V I/O tolerance.
The ultra low power consumption is an outstanding feature and enlarges the application field. It is suitable for some
power consumption sensitive product like small size embedded products, PDA (Personal Digital Assistant) and Palm size
computer …etc.
1.2 AX88796 Block Diagram:
Fig - 1 AX88796 Block Diagram
EECS
EECK
EEDI
EEDO
Print Port
or
General
I/O
AX88796 L
/ GPIO
SPP
SEEPROM
and Memory Arbiter
I/F
8K* 16 SRAM
Registers
NE2000
Ctl BUS
3-in-1 Local Bus Fast Ethernet Controller
Host Interface
5
Remote
FIFOs
DMA
SA[9:0]
ASIX ELECTRONICS CORPORATION
Tranceiver
SD[15:0]
PHY+
MAC
Core
STA
&
SMDC
SMDIO
TPI, TPO
MII I/F