at75c220 ATMEL Corporation, at75c220 Datasheet - Page 7

• Manufacturer Part Number: at75c220
• Description: Smart Internet Appliance Processor Siap
• Manufacturer: ATMEL Corporation

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
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