Xilinx Spartan-3A DSP FPGA Series, Technical Reference Manual

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XtremeDSP Spartan-3A DSP Development Board - Technical reference guide - v1.1
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FMC pin FPGA pin Signal FMC pin FPGA pin Signal
G32 NC GND H32 U2 LA14N
G33 U5 LA26P H33 NC GND
G34 V5 LA26N H34 R8 LA15P
G35 NC GND H35 R7 LA15N
G36 T10 LA27P H36 NC GND
G37 T9 LA27N H37 P8 LA16P
G38 NC GND H38 P9 LA16N
G39 NC VADJ H39 NC GND
G40 NC GND H40 NC VADJ
16. ZBT synchronous SRAM
ISSI IS61NLP25636A-200TQL. The ZBT synchronous SRAM is high-speed, low-latency external memory
for the FPGA. The memory is organized as 256 K × 36 bits, providing a 32-bit data bus supporting four
parity bits.
Note
The FMC module cannot be used when using the ZBT synchronous SRAM. Make sure that the FMC
adjustable power supply is configured for 3.3 V to use the memory. See
FMC expansion connector
for
instructions about how to properly configure the adjustable power supply.
The ZBT synchronous SRAM shares the same data bus as the flash memory ( 10 ).
17. Mictor
The mictor (J14) allows you to monitor up to 32 single-ended signals from the FPGA.
Table 6 Mictor pin assignments
Mictor pin FPGA pin Description Mictor pin FPGA pin Description
1 NC NC 2 NC NC
3 NC GND 4 NC NC
5 A12 SE_CLK_IN 6 D13 SE_CLK_OUT
7 C10 SE_IO_9 8 B7 SE_IO_17
9 D10 SE_IO_11 10 B6 SE_IO_19
11 A9 SE_IO_7 12 NC 3.3V
13 B9 SE_IO_5 14 A4 SE_IO_21
15 B8 SE_IO_13 16 G9 SE_IO_23
17 A8 SE_IO_15 18 B4 SE_IO_25
19 C8 SE_IO_3 20 G10 SE_IO_27
21 C7 SE_IO_1 22 B3 SE_IO_28
23 K12 SE_IO_0 24 F7 SE_IO_29
25 G12 SE_IO_2 26 C6 SE_IO_16
27 K11 SE_IO_4 28 E7 SE_IO_18
29 H9 SE_IO_6 30 C5 SE_IO_20
31 J12 SE_IO_8 32 E10 SE_IO_22
33 H10 SE_IO_10 34 D9 SE_IO_24
35 J11 SE_IO_12 36 D6 SE_IO_26