ax88190a ASIX Electronics Corporation, ax88190a Datasheet - Page 39

• Manufacturer Part Number: ax88190a
• Description: Pcmcia 10/100m Fast Ethernet Mac Controller With Embedded Memory
• Manufacturer: ASIX Electronics Corporation

Appendix B: AX88190 design changes to AX88190A
Please refer to following circuit diagram that implement in AX88190 PWB and follow the following
four steps.
1. Remove AX88190 and replace with AX88190A
2. Remove 2 pieces of buffer memory(32k*8 SRAM). Because they are not necessary anymore.
3. Remove 74F86 and 74F74 TTL IC
4. Shorten the jumper shown as below circuit diagram lable “Jumper for future use”
AX88190A
From PCMCIA
Connector
Pin 9
From AX88190
Pin 101
CLK25M
OE_#
1
2
U2A
74F86
PCMCIA Fast Ethernet MAC Controller
3
Jumper for future use
39
12
11
2
3
D
CLK
D
CLK
ASIX ELECTRONICS CORPORATION
Q
Q
Q
Q
U1A
74F74
U1B
74F74
5
6
9
8
To AX88190
Pin 16
OE_M#