at75c220 ATMEL Corporation, at75c220 Datasheet - Page 7
at75c220
Manufacturer Part Number
at75c220
Description
Smart Internet Appliance Processor Siap
Manufacturer
ATMEL Corporation
Datasheet
1.AT75C220.pdf
(144 pages)
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Figure 3. DSP Subsystem Block Diagram
Figure 4. Application Example – Standalone Ethernet Telephone
Microphone
Speaker
Handset
Network
PC
DSP Subsystem
Program RAM
ASB
Speaker
Interface
Phone
24K x 16
10/100 Mbps PHY
10/100 Mbps PHY
Analog Front End
Ethernet
Ethernet
Codec
Voice
Oak Program Bus
10/100 Mbps
DSP Subsystem
Processing
Dual-port
Bus Interface Unit
Interface
Ethernet
Voice
OakDSPCore
MAC
2K x 16 X-RAM
2K x 16 Y-RAM
Emulation
On-chip
Module
Keyboard Screen
ARM7TDMI Core
Protocol
AT75C220
Stack
VolP
Oak Data Bus
Codec Interface
purpose RAM
16K x 16
General-
Dual-port
256 x 16
Mailbox
External Bus
Controller
Controller
Interface
SDRAM
SRAM
SDRAM
Flash
7
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