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EPM240T100A 数据表(PDF) 44 Page - Altera Corporation |
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EPM240T100A 数据表(HTML) 44 Page - Altera Corporation |
44 / 86 page 3–2 Chapter 3: JTAG and In-System Programmability IEEE Std. 1149.1 (JTAG) Boundary-Scan Support MAX II Device Handbook © October 2008 Altera Corporation w Unsupported JTAG instructions should not be issued to the MAX II device as this may put the device into an unknown state, requiring a power cycle to recover device operation. The MAX II device instruction register length is 10 bits and the USERCODE register length is 32 bits. Table 3–2 and Table 3–3 show the boundary-scan register length and device IDCODE information for MAX II devices. CLAMP (1) 00 0000 1010 Places the 1-bit bypass register between the TDI and TDO pins, which allows the boundary scan test data to pass synchronously through selected devices to adjacent devices during normal device operation, while holding I/O pins to a state defined by the data in the boundary-scan register. USER0 00 0000 1100 This instruction allows you to define the scan chain between TDI and TDO in the MAX II logic array. This instruction is also used for custom logic and JTAG interfaces. USER1 00 0000 1110 This instruction allows you to define the scan chain between TDI and TDO in the MAX II logic array. This instruction is also used for custom logic and JTAG interfaces. IEEE 1532 instructions (2) IEEE 1532 ISC instructions used when programming a MAX II device via the JTAG port. Notes to Table 3–1: (1) HIGHZ, CLAMP, and EXTEST instructions do not disable weak pull-up resistors or bus hold features. (2) These instructions are shown in the 1532 BSDL files, which will be posted on the Altera® website at www.altera.com when they are available. Table 3–1. MAX II JTAG Instructions (Part 2 of 2) JTAG Instruction Instruction Code Description Table 3–2. MAX II Boundary-Scan Register Length Device Boundary-Scan Register Length EPM240 240 EPM570 480 EPM1270 636 EPM2210 816 Table 3–3. 32-Bit MAX II Device IDCODE (Part 1 of 2) Device Binary IDCODE (32 Bits) (1) HEX IDCODE Version (4 Bits) Part Number Manufacturer Identity (11 Bits) LSB (1 Bit) (2) EPM240 EPM240G 0000 0010 0000 1010 0001 000 0110 1110 1 0x020A10DD EPM570 EPM570G 0000 0010 0000 1010 0010 000 0110 1110 1 0x020A20DD EPM1270 EPM1270G 0000 0010 0000 1010 0011 000 0110 1110 1 0x020A30DD EPM2210 EPM2210G 0000 0010 0000 1010 0100 000 0110 1110 1 0x020A40DD |
类似零件编号 - EPM240T100A |
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类似说明 - EPM240T100A |
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