Digital Voice Systems AMBE-3000 Especificações descarregar pdf (Página 34)

AMBE-3000F™ Vocoder Chip Users Manual

Version 3.4, April, 2014

Electrical Characteristics and

Requirements

(Subject to Change) Page 24

DVSI CONFIDENTIAL PROPRIETARY

RESETn

TX_RDY

RTS

“Re set a cti vat ed”

Figure 11 TX_RDY after Reset

3.7 Signal Transition Levels

Note that some of the signals use different reference voltages, see Table 4 Recommended Operating Conditions. Output levels

are driven to a minimum logic-high level of 2.4 V and to a maximum logic-low level of 0.4 V.

Figure 12 Output Levels

Output transition times are specified as follows:

 For a high-to-low transition, the level at which the output is said to be no longer high is below V

OH(MIN)

and the level

at which the output is said to be low is V

OL(MAX)

and lower.

 For a low-to-high transition, the level at which the output is said to be no longer low is above V

OL(MAX)

and the level

at which the output is said to be high is V

OH(MIN)

and higher.

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Digital Voice Systems AMBE-3000 Especificações Página 34