XCS05XL-4VQG100C Xilinx Inc, XCS05XL-4VQG100C Datasheet - Page 23

• Manufacturer Part Number: XCS05XL-4VQG100C
• Description: IC SPARTAN-XL FPGA 5K 100-VQFP
• Manufacturer: Xilinx Inc
• Series: Spartan™-XLr

Specifications of XCS05XL-4VQG100C

• Number Of Logic Elements/cells: 238
• Number Of Labs/clbs: 100
• Total Ram Bits: 3200
• Number Of I /o: 77
• Number Of Gates: 5000
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 100-TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 122-1289

Table 12: Boundary Scan Instructions
Bit Sequence
The bit sequence within each IOB is: In, Out, 3-state. The
input-only pins contribute only the In bit to the boundary
scan I/O data register, while the output-only pins contributes
all three bits.
The first two bits in the I/O data register are TDO.T and
TDO.O, which can be used for the capture of internal sig-
nals. The final bit is BSCANT.UPD, which can be used to
drive an internal net. These locations are primarily used by
Xilinx for internal testing.
From a cavity-up view of the chip (as shown in the FPGA
Editor), starting in the upper right chip corner, the boundary
scan data-register bits are ordered as shown in
The device-specific pinout tables for the Spartan/XL devices
include the boundary scan locations for each IOB pin.
DS060 (v1.8) June 26, 2008
Product Specification
I2
0
0
0
0
1
1
1
1
Instruction
I1
0
0
1
1
0
0
1
1
R
I0
0
1
0
1
0
1
0
1
CONFIGURE
READBACK
(Spartan-XL
PRELOAD
SAMPLE/
Selected
EXTEST
IDCODE
BYPASS
USER 1
USER 2
only)
Test
Readback
IDCODE
BSCAN.
BSCAN.
Register
Register
Source
Bypass
DOUT
TDO1
TDO2
TDO
Data
DR
DR
User Logic
User Logic
Pin/Logic
Pin/Logic
Disabled
I/O Data
Figure
Source
DR
-
-
www.xilinx.com
21.
BSDL (Boundary Scan Description Language) files for
Spartan/XL devices are available on the Xilinx website in
the File Download area. Note that the 5V Spartan devices
and 3V Spartan-XL devices have different BSDL files.
Including Boundary Scan in a Design
If boundary scan is only to be used during configuration, no
special elements need be included in the schematic or HDL
code. In this case, the special boundary scan pins TDI,
TMS, TCK and TDO can be used for user functions after
configuration.
To indicate that boundary scan remain enabled after config-
uration, place the BSCAN library symbol and connect the
TDI, TMS, TCK and TDO pad symbols to the appropriate
pins, as shown in
TMS
TCK
TDI
Bit 0 ( TDO end)
Bit 1
Bit 2
Spartan and Spartan-XL FPGA Families Data Sheet
User Logic
Figure 21: Boundary Scan Bit Sequence
From
(TDI end)
Figure 22: Boundary Scan Example
Figure
Optional
TDI
TMS
TCK
TDO1
TDO2
22.
TDO.T
TDO.O
Top-edge IOBs (Right to Left)
Left-edge IOBs (Top to Bottom)
MODE.I
Bottom-edge IOBs (Left to Right)
Right-edge IOBs (Bottom to Top)
BSCANT.UPD
BSCAN
IBUF
DRCK
SEL1
SEL2
IDLE
TDO
DS060_22_080400
To User
Logic
DS060_21_080400
To User
Logic
TDO
23