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EP20K100E 数据表(PDF) 55 Page - Altera Corporation |
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EP20K100E 数据表(HTML) 55 Page - Altera Corporation |
55 / 117 page Altera Corporation 55 APEX 20K Programmable Logic Device Family Data Sheet IEEE Std. 1149.1 (JTAG) Boundary-Scan Support All APEX 20K devices provide JTAG BST circuitry that complies with the IEEE Std. 1149.1-1990 specification. JTAG boundary-scan testing can be performed before or after configuration, but not during configuration. APEX 20K devices can also use the JTAG port for configuration with the Quartus II software or with hardware using either Jam Files (.jam) or Jam Byte-Code Files (.jbc). Finally, APEX 20K devices use the JTAG port to monitor the logic operation of the device with the SignalTap embedded logic analyzer. APEX 20K devices support the JTAG instructions shown in Table 19. Although EP20K1500E devices support the JTAG BYPASS and SignalTap instructions, they do not support boundary-scan testing or the use of the JTAG port for configuration. Note to Table 19: (1) The EP20K1500E device supports the JTAG BYPASS instruction and the SignalTap instructions. Table 19. APEX 20K JTAG Instructions JTAG Instruction Description SAMPLE/PRELOAD Allows a snapshot of signals at the device pins to be captured and examined during normal device operation, and permits an initial data pattern to be output at the device pins. Also used by the SignalTap embedded logic analyzer. EXTEST Allows the external circuitry and board-level interconnections to be tested by forcing a test pattern at the output pins and capturing test results at the input pins. BYPASS (1) Places the 1-bit bypass register between the TDI and TDO pins, which allows the BST data to pass synchronously through selected devices to adjacent devices during normal device operation. USERCODE Selects the 32-bit USERCODE register and places it between the TDI and TDO pins, allowing the USERCODE to be serially shifted out of TDO. IDCODE Selects the IDCODE register and places it between TDI and TDO, allowing the IDCODE to be serially shifted out of TDO. ICR Instructions Used when configuring an APEX 20K device via the JTAG port with a MasterBlasterTM or ByteBlasterMVTM download cable, or when using a Jam File or Jam Byte-Code File via an embedded processor. SignalTap Instructions (1) Monitors internal device operation with the SignalTap embedded logic analyzer. |
类似零件编号 - EP20K100E |
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类似说明 - EP20K100E |
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