XC3S100E-4CP132GI XILINX [Xilinx, Inc], XC3S100E-4CP132GI Datasheet - Page 72
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XC3S100E-4CP132GI
Manufacturer Part Number
XC3S100E-4CP132GI
Description
Spartan-3E FPGA Family: Complete Data Sheet
Manufacturer
XILINX [Xilinx, Inc]
Datasheet
1.XC3S100E-4CP132GI.pdf
(231 pages)
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Functional Description
Master Serial Mode
In Master Serial mode (M[2:0] = <0:0:0>), the Spartan-3E
FPGA configures itself from an attached Xilinx Platform
Flash PROM, as illustrated in
plies the CCLK output clock from its internal oscillator to the
All mode select pins, M[2:0], must be Low when sampled,
when the FPGA’s INIT_B output goes High. After configura-
tion, when the FPGA’s DONE output goes High, the mode
select pins are available as full-featured user-I/O pins.
enable pull-up resistors on all user-I/O pins during configu-
ration or High to disable the pull-up resistors. The HSWAP
control must remain at a constant logic level throughout
72
P
Recommend
Similarly, the FPGA’s HSWAP pin must be Low to
open-drain
PROG_B
driver
TMS
TDO
TCK
TDI
+2.5V
JTAG
Serial Master
Mode
‘0’
‘0’
‘0’
P
Figure 51: Master Serial Mode using Platform Flash PROM
Figure
HSWAP
M2
M1
M0
TDI
TMS
TCK
PROG_B
51. The FPGA sup-
Spartan-3E
VCCINT
+1.2V
GND
VCCAUX
VCCO_0
VCCO_2
INIT_B
DONE
DOUT
CCLK
TDO
DIN
www.xilinx.com
VCCO_0
+2.5V
V
attached Platform Flash PROM. In response, the Platform
Flash PROM supplies bit-serial data to the FPGA’s DIN
input, and the FPGA accepts this data on each rising CCLK
edge.
FPGA configuration. After configuration, when the FPGA’s
DONE output goes High, the HSWAP pin is available as
full-featured user-I/O pin and is powered by the VCCO_0
supply.
The FPGA's DOUT pin is used in daisy-chain applications,
described later. In a single-FPGA application, the FPGA’s
DOUT pin is not used but is actively driving during the con-
figuration process.
+2.5V
V
D0
CLK
OE/RESET
CE
CF
TDI
TMS
TCK
Platform Flash
XCFxxS = +3.3V
XCFxxP = +1.8V
DS312-2 (v3.4) November 9, 2006
XCFxx
VCCINT
GND
VCCO
VCCJ
Product Specification
CEO
TDO
DS312-2_44_102105
+2.5V
V
R
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