OR3T125-5BA352 AGERE [Agere Systems], OR3T125-5BA352 Datasheet - Page 71

• Manufacturer Part Number: OR3T125-5BA352
• Description: 3C and 3T Field-Programmable Gate Arrays
• Manufacturer: AGERE [Agere Systems]

Data Sheet
June 1999
Lucent Technologies Inc.
Microprocessor Interface (MPI)
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
Example: (First version of Lucent’s OR3C55)
OR3T20
OR3T30
OR3C/T55
OR3C/T80
OR3T125
Device ID Register 1
Device ID Register 2
Device ID Register 3
Device ID Register 4
Part Name
Version
4 bits
Bits [7:1]
Bits [3:0]
Bits [7:4]
Bits [5:0]
Bits [7:6]
Bits [3:0]
Bits [7:4]
Bit 0
Family ID
10 bits
(Hex)
Part*
03
03
03
03
03
Logic 1. This bit is always a one.
0011101, the 7 least significant bits of the Lucent Technologies manufacturer ID.
0000, the 4 most significant bits of the Lucent Technologies manufacturer ID.
The 4 least significant bits of the 10-bit part number.
The 6 most significant bits of the 10-bit part number.
The 2 least significant bits of the device family code.
The 4 most significant bits of the device family code.
The 4-bit device version code.
Family
6 bits
Device ID
(Hex)
(continued)
0C
0E
1C
12
16
0000 0100100000 110000 00000011101 1
Manufacturer
11 bits
ORCA Series 3C and 3T FPGAs
MSB
1 bit
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