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EP1C12F324I6 数据表(PDF) 61 Page - Altera Corporation |
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EP1C12F324I6 数据表(HTML) 61 Page - Altera Corporation |
61 / 94 page Altera Corporation 61 Preliminary Information Cyclone FPGA Family Data Sheet Cyclone devices support reconfiguring the I/O standard settings on the IOE through the JTAG BST chain. The JTAG chain can update the I/O standard for all input and output pins any time before or during user mode. Designers can use this ability for JTAG testing before configuration when some of the Cyclone pins drive or receive from other devices on the board using voltage-referenced standards. Since the Cyclone device might not be configured before JTAG testing, the I/O pins might not be configured for appropriate electrical standards for chip-to-chip communication. Programming those I/O standards via JTAG allows designers to fully test I/O connection to other devices. The JTAG pins support 1.5-V/1.8-V or 2.5-V/3.3-V I/O standards. The TDO pin voltage is determined by the VCCIO of the bank where it resides. The bank VCCIO selects whether the JTAG inputs are 1.5-V, 1.8-V, 2.5-V, or 3.3-V compatible. Cyclone devices also use the JTAG port to monitor the operation of the device with the SignalTap II embedded logic analyzer. Cyclone devices support the JTAG instructions shown in Table 18. |
类似零件编号 - EP1C12F324I6 |
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类似说明 - EP1C12F324I6 |
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