at75c310 ATMEL Corporation, at75c310 Datasheet

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at75c310

Manufacturer Part Number
at75c310
Description
Smart Internet Appliance Processor Electrical And Mechanical Characteristics
Manufacturer
ATMEL Corporation
Datasheet

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at75c310PQ160
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Features
Description
The Atmel AT75C310 Smart Internet Appliance Processor (SIAP) is a high-perfor-
mance processor specially designed for Internet appliance applications, such as
Internet telephony (Voice over Internet Protocol – VoIP). The AT75C310 is built
around an ARM7TDMI microcontroller core running at 20 MIPS with two DSP co-pro-
cessors running at 40 MIPS each – all three processors delivering unmatched
performance for low power consumption.
In a typical standalone VoIP phone, one DSP handles the voice-processing functions
(voice compression, acoustic echo cancellation, etc.), while the other one deals with
the telephony functions (dialing, line echo cancellation, callerID detection, high-speed
modem, etc.). In such an application, the power of the ARM7TDMI allows it to run the
VoIP protocol stack as well as all the system control tasks.
Atmel provides the AT75C310 with three levels of software modules:
• a special port of the Linux kernel as the proposed operating system
• a comprehensive set of tunable DSP algorithms for modems and voice processing,
• a broad range of application-level software modules such as H323 telephony or
ARM7TDMI
Two 16-bit Fixed-point OakDSPCore
256 x 32-bit Boot ROM
88K Bytes of Integrated Fast RAM for Each DSP
Flexible External Bus Interface with Programmable Chip Selects
Dual Codec Interface
Multi-level Priority, Individually Maskable, Vectored Interrupt Controller
Three 16-bit Timer/Counters
Additional Watchdog Timer
Two USARTs with FIFO and Modem Control Lines
Industry Standard Serial Peripheral Interface (SPI)
Up to 23 General-purpose I/O Pins
On-chip DRAM Controller
JTAG Debug Interface
Software Development Suites Available for ARM7TDMI and OakDSPCore
Supported by a Wide Range of Ready-to-use Application Software, including
Multitasking Operating System, Networking, Modems, and Voice-processing Functions
Available in 160-lead PQFP Package
3.3V Power Supply
specially tailored to be run by the DSP subsystems
POP-3/SMTP e-mail services
ARM
®
Thumb
®
Processor Core
®
Cores
Smart Internet
Appliance
Processor –
Electrical and
Mechanical
Characteristics
AT75C310
Rev. 1370A–07/00
1

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at75c310 Summary of contents

Page 1

... The Atmel AT75C310 Smart Internet Appliance Processor (SIAP high-perfor- mance processor specially designed for Internet appliance applications, such as Internet telephony (Voice over Internet Protocol – VoIP). The AT75C310 is built around an ARM7TDMI microcontroller core running at 20 MIPS with two DSP co-pro- cessors running at 40 MIPS each – ...

Page 2

... The values are for full temperature range and worst-case process. Environment Constraints The output delays are valid for a capacitive load of 10 pF, as shown in Figure 1. Figure 1. Output/Bidir Pad Capacitive Load AT75C310 2 *NOTICE: Stresses beyond those listed under “Absolute Maxi- mum Ratings” may cause permanent damage to the device ...

Page 3

Memory Timing Waveforms Figure 2. DRAM Read Cycle (Single Read) NRASx NCASx A NDOE D Table 1. DRAM Read Cycle (Single Read) Timings Symbol Parameter t Read or Write Cycle Time RC t RAS Pulse Width RAS t RAS Precharge ...

Page 4

... OEA t Access Time from Column Address AA t Access Time from RAS RAC t Access Time from CAS Precharge CPA t Data Hold from NDOE OHO t Data Hold from CAS Low DOH AT75C310 4 t CSH t t RCD CAS ASR RAH ASC CAH ...

Page 5

Figure 4. DRAM Write Cycle (Single Write) NRASx NCASx A NDWE D Table 3. DRAM Write Cycle (Single Write) Timings Symbol Parameter t Read or Write Cycle Time RC t RAS Pulse Width RAS t RAS Precharge Time RP t ...

Page 6

... RAS Precharge before CAS RPC t CAS Setup before RAS CSR t CAS Hold after RAS CHR t CAS to RAS Precharge Time CRP t Write Enable Setup Time (Refresh Cycle) WRP t Write Enable Hold Time (Refresh Cycle) WRH AT75C310 RAS t RPC CSR CHR t ...

Page 7

Figure 6. Static Memory Read Cycle (Zero Wait State) NCEx A NSOE (Standard Read Mode) NSOE (Early Read Mode) NWEx (Byte Select Mode) D Table 5. Static Memory Read Cycle (Zero Wait State) Timings Symbol Parameter t Chip Select Low ...

Page 8

... Address Hold Time after Write Strobe High WHAH t Write Strobe High to Byte Strobe High Time WHBSH t Write Strobe Low to Write Strobe High Time WLWH t Data Setup Time before Write Strobe High DSUWH t Data Hold Time after Write Strobe High WHDH AT75C310 8 t CSLCSH t CSLWL t AVWL t BSLWL t WLWH t t ...

Page 9

Figure 8. Static Memory Write Cycle (One Wait State) NCEx A NWEx (Byte Select Mode) NWR/NWEx (Byte Write Mode) D Table 7. Static Memory Write Cycle (One Wait State) Timings Symbol Parameter t Chip Select Low to Chip Select High ...

Page 10

... WLWH t Data Setup Time before Chip Select High DVCSH t Data Setup Time before Write Strobe High DVWH t Data Hold Time after Write Chip Select High CSHDH t Data Hold Time after Write Strobe High WHDH AT75C310 10 t CSLCSH t AVCSL t AVWL t WLWH t DVCSH t ...

Page 11

Figure 10. Static Memory Read Cycle (LCD Mode, Two Wait States) NCE3 A NSOE (Standard Read Mode) NSOE (Early Read Mode) D Table 9. Static Memory Read Cycle (LCD Mode, Two Wait States) Timings Symbol Parameter t Chip Select Low ...

Page 12

... Figure 11. External Bus Master NREQ NGNT Address, Data & Control Table 10. External Bus Master Timings Symbol Parameter t NGNT Low to Address, Data & Control Float GLADCZ t NGNT High to Address, Data & Control Driven GHADC AT75C310 12 t GLADCZ t GHADC Min (ns) Max (ns) 2.0 – 0 – ...

Page 13

Codec Timing Waveforms Figure 12. FS and SCLK as Outputs SSCLK FS t FSV STX t STXV SRX Table 11. FS and SCLK as Outputs Timings Symbol Parameter t FS Valid after TX Edge of SSCLK (Long PCM Type) FSV ...

Page 14

... FS Setup before RX Edge of SSCLK FSS t FS Hold after First RX Edge of SSCLK FSH t STX Valid after TX Edge of SSCLK STXV t SRX Setup before RX Edge of SSCLK SRXS t SRX Hold after RX Edge of SSCLK RSXH t SSCLK Input Period SCLK AT75C310 FSH SCLK t SRXS t RSXH Min (ns) 75.0 0 50.0 25.0 25.0 200.0 Max (ns) – ...

Page 15

Packaging Information Figure 14. SQFP Package Drawing C Table 13. Package Dimensions for 160-lead SQFP Package (mm) Symbol Min c 0.11 c1 0. 0.13 R1 0.13 S 0.4 Tolerances of Form and Position aaa ccc Thermal ...

Page 16

... Ordering Information Speed (MHz) Power Supply 20 3.3V AT75C310 16 Ordering Code Package AT75C310-Q160 PQFP160 Operation Range Commercial (0° to 70°C) ...

Page 17

... Atmel Corporation 2000. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard war- ranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein ...

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