CS495313-CQZ Cirrus Logic Inc, CS495313-CQZ Datasheet - Page 7

• Manufacturer Part Number: CS495313-CQZ
• Description: Audio DSPs 32-Bit Decoder DSP w/Dual DSP Engine
• Manufacturer: Cirrus Logic Inc

Specifications of CS495313-CQZ

• Operating Temperature Range: 0 C to + 70 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-144
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4. Hardware Functional Description
4.1 DSP Core
4.1.1 DSP Memory
4.1.2 DMA Controller
DS705PP2
high-performance, 32-bit, user-programmable, fixed-point DSP that is capable of performing two memory
access control (MAC) operations per clock cycle. Each core has eight 72-bit accumulators, four X- and four Y-
data registers, and 12 index registers.
such as the digital audio input (DAI) and digital audio output (DAO), external memory, or any DSP core
memory, all without the intervention of the DSP. The DMA engine offloads data move instructions from the DSP
core, leaving more MIPS available for signal processing instructions.
the CS4953xx from a host mcu or external FLASH/EEPROM. Users can choose to use standard audio
decoder and post-processor modules which are available from Cirrus Logic.
and Digital Broadcast Decoder applications.
for any of today’s popular audio algorithms including Dolby Digital Surround EX, AAC Multichannel, DTS-ES
96/24, and THX Ultra2.
own arbiter: X, Y, and P RAM/ROMs on DSP A; X, Y, and P RAM/ROMs on DSP B; external memory; and the
peripheral bus. Modulo and linear addressing modes are supported, with flexible start address and increment
controls. The service interval for each DMA channel as well as up to 6 interrupt events, is programmable.
The CS4953xx is a dual-core DSP with separate X and Y data and P code memory spaces. Each core is a
Both DSP cores are coupled to a flexible DMA engine. The DMA engine can move data between peripherals
CS4953xx functionality is controlled by application codes that are stored in on-board ROM or downloaded to
The CS4953xx is suitable for Audio Decoder, Audio Post-processor, Audio Encoder, DVD Audio/Video Player,
Each DSP core has its own on-chip data and program RAM and ROM and does not require external memory
The memory maps for the DSPs are as follows. All memory sizes are composed of 32-bit words.
The powerful 12-channel DMA controller can move data between 8 on-chip resources. Each resource has its
Memory
Memory
Type
Type
X
Y
P
X
Y
P
16k SRAM, 16k ROM
16k SRAM, 32k ROM
16k SRAM, 16k ROM
24k SRAM, 32k ROM
8k SRAM, 32k ROM
8k SRAM, 32k ROM
Table 3. CS495303 DSP Memory Sizes
Table 4. CS495313 DSP Memory Sizes
®Copyright 2008 Cirrus Logic, Inc.
DSP A
DSP A
16k SRAM, 16k ROM
16k SRAM, 16k ROM
10k SRAM, 8k ROM
8k SRAM, 24k ROM
10k SRAM, 8k ROM
8k SRAM, 24k ROM
DSP B
DSP B
32-bit Audio Decoder DSP Family
CS4953xx Data Sheet
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