Xilinx Spartan-3A User Manual page 85

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Table 11-1: FPGA-to-Flash Connections (Continued)
Spartan-3A/3AN Starter Kit Board User Guide
UG334 (v1.0) May 28, 2007
NOR Flash
Category Signal Name
NF_D15
(NF_A0)
NF_D14
NF_D13
NF_D12
NF_D11
NF_D10
NF_D9
NF_D8
NF_D7
NF_D6
NF_D5
NF_D4
NF_D3
NF_D2
NF_D1
NF_D0
(SPI_MISO)
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FPGA Pin
Number
T17
Upper 8 bits of a 16-bit halfword when Flash is
configured for x16 data (NF_BYTE=High). The
Flash does not have a dedicated D15 pin.
R21
Instead, this function is shared with the least-
T22 significant address pin. On the Flash memory
component, this pin is named D15/A-1, which
U22
connects to the FPGA's A0 address pin. After
U21 configuration, if the FPGA application asserts
NF_BYTE-High, use NF_A0 to carry the D15
V22
signal. Connect the other higher-order data
lines to FPGA user I/Os.
W22
T20
Y9 Upper 7 bits of a data byte or lower 8 bits of a
16-bit halfword. Connects to FPGA pins D[7:1]
AB9
to support the BPI configuration.
Y11
AB11
U13
AA17
Y17
AB20 Bit 0 of a data byte and a 16-bit halfword.
Connects to FPGA pin D0/DIN to support the
BPI configuration. Shared with other SPI
peripherals and Platform Flash PROM.
Flash Connections
Function
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