User`s manual

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Chapter 2
System Features and Components
Layout and Placement........................................................................................ 2-2
Power Supply.................................................................................................... 2-7
5 V @ 3 A .....................................................................................................2-7
3.3 V @ 500 mA ...........................................................................................2-7
–24 V @ 50 mA and –70 V @ 60 mA..........................................................2-8
–5 V @ 200 mA ............................................................................................2-8
Am186CC Microcontroller ............................................................................... 2-9
Am186CC Microcontroller Power Supply..................................................2-10
Am186CC Microcontroller Clocking.......................................................... 2-11
Am186CC Microcontroller Reset ...............................................................2-12
System Memory...............................................................................................2-13
DRAM/SRAM Memory..............................................................................2-13
Flash Memory..............................................................................................2-14
10BaseT Ethernet Interface .............................................................................2-15
ISDN Interface.................................................................................................2-18
ISDN S/T Interface......................................................................................2-19
ISDN U Interface.........................................................................................2-20
Serial PC Interface...........................................................................................2-22
USB PC Interface ............................................................................................2-23
POTS Interface ................................................................................................2-25
DSLAC PCM Interface ...............................................................................2-25
RSLIC Interface ..........................................................................................2-27
Dual Tone Multiple Frequency (DTMF).....................................................2-27
Debug Circuitry ...............................................................................................2-28
TIP Interface................................................................................................2-28
RESCON Configuration.............................................................................. 2-30
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