DSP56321VF240

DSP Fixed-Point 24Bit 240MHz 240MIPS 196Pin MA-BGA Tray

Overview

The DSP56321, a member of the DSP56300 family of programmable DSPs, supports network applications with general filtering operations. The on-chip enhanced filter coprocessor EFCOP executes filter algorithms in parallel with core operations to provide enhanced signal quality without affecting channel throughput or total number of channels supported, resulting in increased overall performance. Like the other family members, the DSP56321 uses a high-performance, single clock cycle per instruction engine, a barrel shifter, 24-bit addressing, instruction cache, and direct memory access DMA controller. The DSP56321 offers 275 million multiply accumulates per second MMACS performance 550 MMACS using the EFCOP in filtering applications using an internal 275 MHz clock, a 1.6-volt core and independent 3.3-volt input/output I/O.

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## Features

**High-performance DSP56300 core:**

* 275 MMACS 550 MMACS using the EFCOP in filtering applications with a 275 MHz clock at 1.6 volts

* Object code compatible with the DSP56000 core with highly parallel instruction set

* Data arithmetic logic unit data ALU with fully pipelined 24 x 24-bit parallel multiplier-accumulator MAC, 56-bit parallel barrel shifter fast shift and normalization; bit stream generation and parsing, conditional ALU instructions and 24-bit or 16-bit arithmetic support under software control

* Program control unit PCU with position-independent code PIC support, addressing modes optimized for DSP applications including immediate offsets, on-chip instruction cache controller, on-chip memory-expandable hardware stack, nested hardware DO loops and fast auto-return interrupts

* DMA with six channels supporting internal and external accesses; one-, two-, and three-dimensional transfers including circular buffering; end-of-block- transfer interrupts; and triggering from interrupt lines and all peripherals

* Digital phase-lock loop DPLL allows change of low-power divide factor DF without loss of lock

* Hardware debugging support including on-chip emulation OnCE module, JTAG test access port TAP

**Enhanced filter coprocessor EFCOP:**

* Internal 24 x 24-bit filtering and echo-cancellation coprocessor

* Runs in parallel to the DSP core

**Internal memories:**

* 192K x 24-bit on-chip RAM total

* Program RAM, instruction cache, X data RAM and Y data RAM sizes are programmable:

**Program

RAM Size

.

*

|

**Instruction

Cache Size

.

*

**X Data

RAM Size

.

**

**Y Data

RAM Size

.

**

\---|---|---|---

32 K x 24-bit

0

80 K x 24-bit

80 K x 24-bit

31 K x 24-bit

1024 x 24-bit

40 K x 24-bit

76 K x 24-bit

76 K x 24-bit

39 K x 24-bit

76 K x 2 4-bit

48 K x 24-bit

72 K x 24-bit

72 K x 24-bit

47 K x 24-bit

64 K x 24-bit

64 K x 24-bit

63 K x 24-bit

60 K x 24-bit

60 K x 24-bit

71 K x 24-bit

56 K x 24-bit

56 K x 24-bit

79 K x 24-bit

96 K x 24-bit

48 K x 24-bit

95 K x 24-bit

112 K x 24-bit

40 K x 24-bit

111 K x 24-bit

* Includes 12 K x 24-bit shared memory that is, memory shared by the core and the EFCOP.

* 192 x 24-bit bootstrap ROM

**External memory expansion:**

* Up to two 256K x 24-bit word memory spaces using the standard external address lines

* Program memory expansion to one 256K x 24-bit word memory space using the standard external address lines

* External memory expansion port

* Chip select logic for glueless interface to SRAMs

**Internal peripherals:**

* 3.3-volt I/O interface enhanced 8-bit parallel host interface HI08 supports a variety of buses for example, ISA and provides glueless connection to a number of industry-standard microcomputers, microprocessors and DSPs

* Two enhanced synchronous serial interfaces ESSI0 and ESSI1, each with one receiver and three transmitters

* Serial communications interface SCI with baud-rate generator

* Triple timer module

* Up to 34 programmable general-purpose I/O GPIO signals, depending on which peripherals are enabled

**Reduced power dissipation:**

* Very low-power CMOS design

* Wait and stop low-power standby modes

* Fully static design specified to operate down to 0 Hz DC

* Optimized power management circuitry instruction-dependent, peripheral-dependent, and mode-dependent

## Features