PDSP1601A

·  16-bit, 32 instruction 20MHz ALU
·  16-bit, 20MHz Logical, Arithmetic or Barrel Shifter
·  Independent ALU and Shifter Operation
·  4 x 16-bit On Chip Scratchpad Registers
·  Multiprecision Operation; e.g. 200ns 64-bit Accumulate
·  Three Port Structure with Three Internal Feedback Paths Eliminates I/O Bottlenecks
·  Block Floating Point Support
·  300mW Maximum Power Dissipation
·  84-pin Pin Grid Array or 84 Contact LCC Packages or 100 pin Ceramic Quad Flat Pack

· Digital Signal Processing
· Array Processing
· Graphics
· Database Addressing
· High Speed Arithmetic Processors

Supply voltage Vcc                               -0.5V to 7.0V
Input voltage V_IN                         -0.9 to Vcc + 0.9V
Output voltage V_OUT                   -0.9 to Vcc + 0.9V
Clamp diode current per pin Ik(see note 2)  ±18mA
Static discharge voltage (HMB)                         500V
Storage temperature T_S                   -65 to +150
Ambient temperature with
power applied T_amb
    Military                                          -40 to +125
   
    Industrial                                        -40 to +85
Package power dissipation P_TOT
    AC                                                            1000mw
    LC                                                            1000mw
NOTES
1.   Exceeding these ratings may cause permanent damage. Functional operation under these conditions is not implied.
2.   Maximum dissipation or 1 second should not be exceeded, only one output to be tested at any one time.

The PDSP1601A is a high performance 16-bit arithmetic logic unit with an independent on-chip 16-bit barrel shifter.

The PDSP1601A has two operating modes giving 20MHz or 10MHz register-to-register transfer rates.

The PDSP1601A supports Multicycle multiprecision operation.  This allows a single device to operate at 20MHz for 16-bit fields, 10MHz for 32-bit fields and 5MHz for 64-bit fields.

The PDSP1601A can also be cascaded to produce wider words at the 20MHz rate using the Carry Out and Carry In pins.  The Barrel Shifter is also capable of extension, for example the PDSP1601A can used to select a 16-bit field from a 32-bit input in 100ns.