The goal of this project was to reverse engineer the Cisco VWIC3-2MFT-T1/E1 WAN card. This is a plug-in board that slides into a standard HWIC slot of a Cisco router.
These boards can be found for $5 on eBay and when properly reverse engineered, they'd be perfect boards for hobby FPGA applications.
Except for one thing: while Intel lists that Stratix-II FPGAs are supported with the Quartus Web Edition 11.0sp1, this is only true for the smallest version, the EP2S15 FPGA, not the EP2S30 FPGA! For that one, you need the expensive Quartus Standard Edition.
And that makes reverse engineering this board pretty much useless... I obviously only figured this out after already spending a healthy number of hours on the reverse engineering the board.
For posterity's sake, here's the information that I was able to tease out of the PCB so far.
I found out about this board through the FPGA Board Hack project.
It lists a number of commercial projects that have an FPGA in them, and it has a dedicated log about the Cisco VWIC3-2MFT but no real practical information about how to wire things up, or which IOs can be used.
PCB Top:
PCB Bottom:
Main Active Components:
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Altera Stratix II EP2S30F484C5N FPGA
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ISSI IS64LPS25636A 256K x 36 200MHz SRAM
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PMC Sierra Comet Dual T1/E1 Framer/Line Driver
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2.0480 MHz Xtal
Power Regulators:
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ISL6420AIRZ Buck PWM Controller
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BSC150N03LD Dual MOSFET Power Transistor
Controller by ISL
Input Ext 12V -> 3.3V (SRAM VDD etc.) -> 1.2V (FPGA VCCINT)
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Micrel M5209-1.8YM 1.8V LDO
Input Ext 3.3V -> 1.8V (FPGA VDDPD)
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MAX1951 Switched Regulator
Input Ext 5V -> ?
Extra stuff:
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TRXCOM MD-R0090R Dual Line Transformer
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CV9606
Texas Instruments custom part for Cisco?
The CISCO HWIC connector has 2 rows with pins that are 1.26mm spaced, and 1 row with pins that are 2.56mm spaced.
AFAIK, the top row is only used for power delivery: 12V, 5V, and 3.3V.
There are CISCO boards that only have the bottom 2 rows. From what I've measured, the bottom 2 rows only contain a 12V supply, no 5V or 3.3V pins.
Note: The Cisco c1600re reverse engineering project has some pins of the WIC connector annotated. The WIC connector is probably backward compatible with the HWIC slot.
In theory, you need 3 external power supplies to feed this thing: 12V, 5V, and 3.3V.
However, you can get away with only 5V by doing this:
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Connect the 12V to 5V.
The 12V goes into a power regulator that creates 3.3V. When you dial down the voltage on your external power supply from 12V to 5V, the regulator still outputs 3.3V.
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Connect the 3.3V that comes out of the 3.3V regulator to the external 3.3V input
It's unclear why there is an external 3.3V and an internally generated 3.3V. But everything seem to work by tying them together (as far as I could tell.)
I bought a Cisco 3825 router ($10K back in the day, now $50 on eBay) to help with reverse engineering:
N20: Xtal 2.0480 MHz
HWIC FPGA Connections (copied from FPGA Board Hacks):
GND 69 1 35
2 GND GND 36
70 3 K1 GND 37
4 F5 38
71 5 GND 39
6 GND 40
72 7 41
8 42
73 9 43
10 GND GND 44
74 11 K4 45
12 K6 46
75 13 K7 K8 47
14 J7 J8 48
76 15 K2 C5 49
16 C4 F1 50
77 17 GND 51
18 H3 H4 52
78 19 H5 H6 53
20 H7 G5 54
79 21 G6 G7 55
22 56
5.0 80 23 57
24 GND 58
GND 81 25 59
26 F4 F2 60
3.3 82 27 E1 F7 61
28 F6 62
GND 83 29 GND F8 63
30 E3 GND 64
12. 84 31 GND B13 65
32 B11 GND 66
GND 85 33 GND W11 67
34 68
SRAM FPGA Connections (copied from FPGA Board Hacks):
1 219 H12 DQPc
2 1614 E20 DQc0
3 1572 F21 DQc1
4 - VDDQ
5 - VSSQ
6 1599 F19 DQc2
7 1602 F20 DQc3
8 231 G12 DQc4
9 195 G13 DQc5
10 - VSSQ
11 VDDQ
12 114 G14 DQc6
13 75 G15 DQc7
14 - N.C.
15 - VDD
16 - N.C.
17 - VSS
18 42 G16 DQd0
19 207 F13 DQd1
20 - VDDQ
21 - VSSQ
22 120 F14 DQd2
23 87 F15 DQd3
24 57 F16 DQd4
25 1575 G17 DQd5
26 - VSSQ
27 - VDDQ
28 1578 G18 DQd6
29 1587 G19 DQd7
30 159 H14 DQPd
31 - LBOn
32 21 B19 A5
33 180 A15 A4
34 168 A16 A3
35 144 A17 A2
36 150 A18 A1
37 24 A19 A0
38 - N.C.
39 - N.C.
40 - VSS
41 - VDD
42 1605 D22 N.C.(A18)
43 213 C14 A17
44 1617 C22 A10
45 1608 C21 A11
46 72 C19 A12
47 132 C18 A13
48 147 C17 A14
49 183 C16 A15
50 186 C15 A16
51 375 H9 DQPa
52 288 A8 DQa0
53 300 A7 DQa1
54 - VDDQ
55 - VSSQ
56 297 B8 DQa2
57 309 B7 DQa3
58 345 B5 DQa4
59 324 A6 DQa5
60 - VSSQ
61 - VDDQ
62 336 A5 DQa6
63 333 B6 DQa7
64 - ZZ
65 - VDD
66 - N.C.
67 - VSS
68 105 D15 DQb0
69 117 E14 DQb1
70 - VDDQ
71 - VSSQ
72 96 E15 DQb2
73 30 E16 DQb3
74 27 E17 DQb4
75 33 D17 DQb5
76 - VSSQ
77 - VDDQ
78 12 D18 DQb6
79 1611 E19 DQb7
80 234 H11 DQPb
81 189 B15 A9
82 177 B16 A8
83 - ADVn
84 - ADSPn
85 1563 H17 ADSCn
86 1560 H19 OEn
87 1566 H18 BWn
88 - GW
89 267 C10 CLK
90 - VSS
91 - VDD
92 - CS2n
93 1593 E22 WEan
94 1581 F22 WEbn
95 1557 G22 WEcn
96 1545 H22 WEdn
97 - CS2p
98 1584 E21 CS1n
99 153 B17 A7
100 141 B18 A6