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NETBuilder II Fiber Distributed Data Interface (FDDI) Module Installation Guide
Multi-mode accepts multi-mode duplex fiber
of
62.5/125um. An 11-db optical budget size allows cables up to 2km
long.
Interface speed: 25MHz
Controller speed: 12.5MHz
Clocks: 25MHz symbol clock rate, 12.5MHz byte
clock rate
Note: In a 4 or 8 slot
chassis,
the MAC board is installed ABOVE the PHY board.
Note: In 4 or 8 slot chassis,
the
MAC board MUST be installed first.
Note: Both single- and
multi-mode
FDDI modules need version 7.2 or later of the NETBuilder Family
Bridge/Router
software.
FDDI MAC+ Top
CR3 A STATUS LED
CR4 B STATUS LED
CR5 MAC STATUS LED
J1 Optical Bypass Port
J2 Backplane connector to NETBuilder II
PTC1 PTC fuse
U2 LSI L1A9316 CMPI+ 40-0146-000
U5 ATMEL AT28C64B-20JC
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U6 Motorola MC68838KBC
U9,11 Cypress CY7C421-25VC
U10 Motorola MC68840FE25B05
U12 ALTERA 39-0048-000
U15 ACTEL A1020B-2 39-0050-001
U16 ALTERA 39-0047-002
U17 ALTERA 39-0049-002
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U6 Motorola MC68838KBC
Media Access Controller
U10 Motorola
MC68840FE25B05 lntegrated Fiber
Distributed Data Interface
FDDI MAC+ Bottom
U501-508 Eight MUSIC MU9C1480-12DC
1024 x 64-bit LANCAM
Note: The MAC board contains
active
components on the bottom side that may come into contact with the
board
below it.
Note: Do NOT remove the PHY
and
MAC boards at exactly the same time.
FDDI PHY - Multimode
J1 Backplane connector to NETBuilder II
RP1-9 Dale SOMC 1600-S41
U1 AMD PALCE
U2 AMD PALCE
U3 LSI L1A6189 CMPI 40-0031-000
U4 TI 74ALS373A
U5 ATMEL AT28C64B 20JC
U6-7 Motorola ACT273
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U9 AMD AM79C864AKC
U10 AMD AM79C864AKC
U13 Motorola XC68836FNB
U14 Motorola XC68836FNB
XCVR1 FSC Transceiver 269028-5
XCVR2 FSC Transceiver 269028-5
Y2 20.8333MHz xtal
Y3 20.8333MHz xtal
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U9,10 Am79C864A
Physical Layer Controller With Scrambler (PLC-S)
U13,14
Motorola XC68836FNB
FDDI Clock Generator
FSC Transceiver 269028-5 marked 155 Mb/s, 1300nm
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