AX88850 ASIX [ASIX Electronics Corporation], AX88850 Datasheet - Page 6

• Manufacturer Part Number: AX88850
• Description: 100BASE-TX/FX Repeater Controller
• Manufacturer: ASIX [ASIX Electronics Corporation]

1.2 Features
The AX88850 Family has the following members:
AX88851
AX88852
AX88853
AX88854
AX88856
Function availability list
Parts Number 16MII + 2MII 8MII + 2MII
AX88851
AX88852
AX88853
AX88854
AX88850
IEEE 802.3u repeater compatible
Supports 10 or 18 network connections optional configuration.
8 PCS interfaces direct interface to PHY chip with PCS interface ( ie.LUC3X04,
KS8761, QSI6611, NWK914 ) to save user cost
16 MII interfaces to double the network connections.
2 dedicated MII interfaces can also support 100BASE-T4/FX PHY interfaces
The 2 dedicated MII interfaces can also easily connect to MII interface of 100BASE
MAC controller for network management purpose or other bridging devices.
Up-to 8 repeater chips can be cascaded for large HUB application
Low latency design supports Class II repeater implementation with large port number.
All ports can be separately isolated or partitioned in response to fault condition
Separate jabber and partition state machines for each port
Separate carrier integrity monitor state machines for each port to protect network from
some transient fault conditions (AX88853 PCS mode only)
Management interface for AX88856 (MIB IC) allows all repeater MIBs to be maintained
Large per-port management counters to reduce CPU overhead
External pins setup or automatic daisy chain channel setup repeater ID.
Per-port LED display for Jabber, Partition, Link/Activity. Global utilization
collision (%) presentation.
Power on LED diagnosis. All the LED display will follow the “ON-OFF-ON-OFF-
Normal” operation procedure during/after power on reset.
Dedicated collision LED display
208-pin PQFP
16 shared MII ports + 2 dedicated MII ports
8 shared MII ports + 2 dedicated MII ports
8 PCS (Symbol) Interface ports + 2 dedicated MII ports
AX88851 + AX88853 + management function
MIB co-processor for intelligent Hub applications
4
4
4
4
8PCS + 2MII Management I/F
6
4
4
ASIX ELECTRONICS CORPORATION
4
PRELIMINARY
and