AC4830xC-C Data Book
Contents
Revision 1.0
3
March 2000
Table of Contents
1
Introduction
7
1.1
Overview .....................................................................................................................7
1.2
Features.......................................................................................................................8
2
Functional Description
11
2.1
Overview ...................................................................................................................11
2.2
Interfaces ...................................................................................................................13
2.2.1
Voice Interface................................................................................................14
2.2.2
PCM Clock Generator .....................................................................................15
2.2.2.1
Examples of External Crystal Use:........................................................16
2.2.3
Host Port Interface ..........................................................................................17
2.2.4
Memory, I/O and CAS Interface ......................................................................19
2.2.5
Channel Associated Signaling Port ..................................................................21
2.2.6
Test Access Port..............................................................................................23
2.3
HPI on-chip Memory Map .........................................................................................24
2.4
Pin Description ..........................................................................................................25
2.4.1
Signals and Pin-out 144-pin TQFP package .....................................................25
3
Chip Data and Timing
31
3.1
General Specifications ...............................................................................................31
3.2
Electrical Characteristics and Operating Conditions.................................................... 32
3.2.1
Absolute Maximum Ratings over Specified Temp. Range................................32
3.2.2
Electrical Characteristics ................................................................................. 34
3.3
Timing Characteristics ...............................................................................................35
3.3.1
Memory and I/O Interface Timing ...................................................................35
3.3.1.1
Memory Read....................................................................................... 35
3.3.1.2
Memory Write......................................................................................37
3.3.1.3
General I/O Read Timing .....................................................................38
3.3.1.4
I/O Write Timing..................................................................................39
3.3.2
PCM Port Timing when External Codec Used ................................................. 40
3.3.2.1
PCM Port Receive Timing (using Codec) .............................................40
3.3.2.2
PCM Port Transmit Timing (using Codec) ............................................41
3.3.3
PCM Port Timing with Clock from PCM Framer .............................................43
3.3.3.1
PCM Port Receive Timing (using PCM Framer) ...................................43
3.3.3.2 PCM Port Transmit Timing (using PCM Framer) ....................................44
3.3.4
Host Port Interface Timing ..............................................................................45
3.3.4.1
Host Port Interface Switching Characteristics........................................45
3.3.4.2
Host Port Interface Timing Requirements .............................................46
3.3.5
Reset Timing ..................................................................................................50
3.3.6
External Crystal Option ...................................................................................51
3.4
Packaging Specifications............................................................................................52
4
Applications
53
Содержание AC4830 C-C Series
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Страница 12: ...AudioCodes Ltd AC4830xC C VoPP 10 Catalog Number LTRT 00060 Reader s Notes...
Страница 58: ...AudioCodes Ltd AC4830xC C VoPP 56 Catalog Number LTRT 00060 Figure 4 2 Interface Application Driving a Codec...
Страница 60: ...AudioCodes Ltd AC4830xC C VoPP 58 Catalog Number LTRT 00060 Reader s Notes...