GENERAL DESCRIPTION

The ML7005 is a multi-functional DTMF transceiver LSI with built-in a DTMF signal generator, a DTMF signal receiver, a call progress tone generator, a call progress tone detector, and a FAX

(FX) signal detector.

FEATURES

• Wide range of power supply voltage : +2.7 V to +5.5 V

• Low power consumption

   Operating mode : 4.0 mA (VDD = 3 V) Typ.

   Operating mode : 5.0 mA (VDD = 5 V) Typ.

   Power down mode : 1 mA Typ.

• The 4-bit processor interface supports both the Intel processor mode in which a read signal and

a write signal are used independently of each other, and the Motorola processor mode in which

a read signal and a write signal are used in common.

• The DTMF receiver can select either the high-speed detection mode (signal repeat time: more

than 60 ms) or the normal detection mode (signal repeat time: more than 90 ms).

• Built-in call progress tone generator

• Built-in FAX signal (FX: 1300 Hz) detector

• The DTMF signal generator, DTMF signal detector, call progress tone generator, and call

progress tone detector can operate concurrently.

• Built-in 3.579545 MHz crystal oscillator circuit

• Package :

   32-pin plastic SSOP (SSOP32-P-430-1.00-K) (Product name: ML7005MB)