HW-SPAR3E-SK-US-G Xilinx Inc, HW-SPAR3E-SK-US-G Datasheet - Page 98
HW-SPAR3E-SK-US-G
Manufacturer Part Number
HW-SPAR3E-SK-US-G
Description
KIT STARTER SPARTAN-3E
Manufacturer
Xilinx Inc
Specifications of HW-SPAR3E-SK-US-G
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
122-1507
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Functional Description
Slave Serial Mode
For additional information, refer to the “Slave Serial Mode”
chapter in UG332.
In Slave Serial mode (M[2:0] = <1:1:1>), an external host
such as a microprocessor or microcontroller writes serial
configuration data into the FPGA, using the synchronous
serial interface shown in
data is presented on the FPGA’s DIN input pin with suffi-
cient setup time before each rising edge of the externally
generated CCLK clock input.
98
•
•
•
•
Internal memory
Disk drive
Over network
Over RF link
Configuration
Memory
Source
Download Host
Intelligent
Recommend
open-drain
PROG_B
•
•
•
READ/WRITE
Microcontroller
Processor
Tester
driver
DATA[7:0]
VCC
GND
PROG_B
SELECT
V
CLOCK
INIT_B
TMS
TCK
TDO
DONE
BUSY
TDI
JTAG
2.5V
Figure
63. The serial configuration
Figure 62: Daisy-Chaining using Slave Parallel Mode
Parallel
Slave
Mode
‘1’
‘1’
‘0’
‘0’
P
HSWAP
M2
M1
M0
D[7:0]
BUSY
CSI_B
RDWR_B
CCLK
TDI
TMS
TCK
PROG_B
Spartan-3E
VCCINT
+1.2V
FPGA
GND
VCCAUX
VCCO_0
VCCO_1
VCCO_2
www.xilinx.com
CSO_B
INIT_B
DONE
LDC0
LDC1
LDC2
HDC
TDO
VCCO_0
VCCO_1
+2.5V
V
V
The intelligent host starts the configuration process by puls-
ing PROG_B and monitoring that the INIT_B pin goes High,
indicating that the FPGA is ready to receive its first data.
The host then continues supplying data and clock signals
until either the DONE pin goes High, indicating a successful
configuration, or until the INIT_B pin goes Low, indicating a
configuration error. The configuration process requires
more clock cycles than indicated from the configuration file
size. Additional clocks are required during the FPGA’s
start-up sequence, especially if the FPGA is programmed to
wait for selected Digital Clock Managers (DCMs) to lock to
their respective clock inputs (see
+2.5V
Parallel
Slave
Mode
‘0’
P
‘1’
‘1’
‘0’
HSWAP
M2
M1
M0
D[7:0]
BUSY
CSI_B
RDWR_B
CCLK
TDI
TMS
TCK
PROG_B
Spartan-3E
VCCINT
FPGA
+1.2V
GND
DS312-2 (v3.8) August 26, 2009
VCCAUX
VCCO_0
VCCO_1
VCCO_2
Start-Up, page
CSO_B
INIT_B
DONE
LDC0
LDC1
LDC2
HDC
TDO
Product Specification
VCCO_0
VCCO_1
+2.5V
V
DS312-2_53_082009
107).
D[7:0]
CCLK
CSO_B
PROG_B
DONE
INIT_B
TMS
TCK
R
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