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OR3T125 Datasheet(PDF) 71 Page - Agere Systems |
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OR3T125 Datasheet(HTML) 71 Page - Agere Systems |
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71 / 210 page  Lucent Technologies Inc. 71 Data Sheet June 1999 ORCA Series 3C and 3T FPGAs Microprocessor Interface (MPI) (continued) Device ID Registers The MPI device ID is broken into four registers holding 1 byte each. The device ID that is available through the MPI is the same as the boundary-scan ID code, except that the device ID in the MPI has a reverse bit order. There is no means to overwrite any of the device ID as can be done with the boundary-scan ID, but the MPI scratchpad register can be used as a personalization register. The format for the entire device ID is shown below followed by family and device values and the partitioning of the device ID into the four device ID registers. Table 23. Device ID Code * PLC array size of FPGA. Table 24 shows the family and device values for all parts covered by this data sheet. Table 24. Series 3 Family and Device ID Values Table 25 describes the device IDs for all parts covered by this data sheet as they are partitioned into the four regis- ters found in the MPI. Table 25. ORCA Series 3 Device ID Descriptions Version Part* Family Manufacturer MSB 4 bits 10 bits 6 bits 11 bits 1 bit Example: (First version of Lucent’s OR3C55) 0000 0100100000 110000 00000011101 1 Part Name Family ID (Hex) Device ID (Hex) OR3T20 03 0C OR3T30 03 0E OR3C/T55 03 12 OR3C/T80 03 16 OR3T125 03 1C Device ID Register 1 Bit 0 Logic 1. This bit is always a one. Bits [7:1] 0011101, the 7 least significant bits of the Lucent Technologies manufacturer ID. Device ID Register 2 Bits [3:0] 0000, the 4 most significant bits of the Lucent Technologies manufacturer ID. Bits [7:4] The 4 least significant bits of the 10-bit part number. Device ID Register 3 Bits [5:0] The 6 most significant bits of the 10-bit part number. Bits [7:6] The 2 least significant bits of the device family code. Device ID Register 4 Bits [3:0] The 4 most significant bits of the device family code. Bits [7:4] The 4-bit device version code. |
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