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AT75C Datasheet

  • AT75C

  • AT75C DSP Subsystem [Updated . 171 Pages] The AT75C DSP subs...

  • 171頁(yè)

  • ETC

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Features
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Fully Autonomous DSP System
16-bit Fixed-point OakDSPCore
24K x 16 of Uploadable Program RAM
16K x 16 of Data RAM
2K x 16 of X-RAM
2K x 16 of Y-RAM
X-RAM and Y-RAM Accessible within the Same Cycle
JTAG Interface Available on AT75C220 and AT75C320
On-chip Emulation Module
Flexible Codec Interface
Communication with External Processor through Dual-port Mailbox
Description
The AT75C DSP subsystem is an autonomous DSP-based computation block that co-
exists on-chip with other processors and functions. It is built around a 16-bit, fixed-
point, industry-standard OakDSPCore. Additionally, the DSP subsystem embeds all
elements necessary to run complex DSP algorithms independently without any exter-
nal resources.
The self-contained subsystem contains the OakDSPCore itself, program memory,
data memory, an on-chip emulation module and a flexible codec interface. These
resources allow the subsystem to run complex DSP routines, such as V.34 modem
emulation or state-of-the-art voice compression.
The codec interface permits connection of any external industry-standard codec
device, allowing the DSP subsystem to handle directly external analog signals such as
telephone line or handset signals.
Communication between the DSP subsystem and the on-chip ARM7TDMI
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core is
achieved through a semaphore-operated dual-port mailbox.
Smart Internet
Appliance
Processor
(SIAP
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)
AT75C
DSP Subsystem
Rev. 1368C鈥揑NTAP鈥?8/02
1

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