NM-1FE1R2W 1FE/1TR/2
WIC Network Modules
18 Dec 2023 Breaking news! The NM-1FE2W sometimes has "Token Ring" in the item description. NOT SO!
NM-1E1R2W 10Mb/s Ethernet, 16/4 T/R, 2 WIC [IBM version] NOT 10/100 FE !
Top uses IBM 38H6818 [bad picture]
Bottom uses
38H6302 Multi-Protocol Chip (MPC) contains a Token Ring and Ethernet MAC.
50G7028 Token Ring front end
NM-1FE1R2W [Olicom version] 100Mb/s Fast Ethernet, 16/4 T/R, 2 WIC
This NM-1FE1R2W seems to be built in 2000. Madge bought Olicom's Token Ring stuff in 2000. Not sure of if or when the Olicom 119000092 chip was replaced.
Top Side Components [Olicom version]
| CR13
IN-RING LED CR14 FDX LED CR15 16 Mbps LED CR16 LINK LED CR17 FDX LED CR18 100 Mbps LED CR19 EN LED F1 Fuse J1,2 WIC Socket J3 Unknown 10-pin pads J5 5-pin header TR Status? J6 DE9 Token Ring Port J7 Token Ring RJ45 port J8 Fast Ethernet RJ45 Port |
P1
Connector to PCI Bus T1 Pulse PE-67583 Transformer T4 Bel 5558-5999-46 Transformer U2 Xilinx XC9536 U6 Olicom 119000092 [God alone knows] U8 AMD AM79C971AVC PCnet-FAST U9 Zarlink MT90863 Rate Conversion Switch U11 Xilinx XCS20XL U15 TI380C60A CMOS T/R Interface Device U17 17-50 33-02 U18 PEB20534 H-10 DSCC4 ver 2.1 U19 Level One LXT970AQC FE Transceiver U21 Xilinx Spartan XCS20 Y1 25 MHz osc |
Bottom Side Components [Olicom version]
U22 IDT 71V016-S15PH 3.3V CMOS Static RAM 1 Meg (64K x 16-Bit)
U24 ISSI IS61C6416-12T 12ns 5V 64K x 16 high-speed CMOS static RAM
U25 Summit Microelectronics S39421S Hot Swap Voltage Controller
NOTE: the two CMOS SRAMs are different voltages and speeds.
NOTE: U25 is a Hot Swap Voltage Controller. Hot Swap is for the NM-1FE1R2W ONLY, the WICs should NOT be inserted or removed from the powered-up NM-1FE1R2W. It -MIGHT- be possumble to Hot Swap the NM-1FE1R2W with WICs already installed
NOTE: There is no documentation on the Olicom 119000092. Surfing Flea-Buy suggests the ISA 1190000nn and PCI 1190000nn are earlier versions of the 119000092. the '92 -MIGHT- be a version for network gear [routers, switches] -LFO