MT9160AN1 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc

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MT9160AN1

ISO2-CMOS 3 Volt Multi-Featured Codec (MFC)

Zarlink Semiconductor Inc 

MT91L60/61

Data Sheet

Code

+ Full Scale

+ Zero

-Zero

(quiet code)

- Full Scale

Sign/

Magnitude

1111 1111

1000 0000

0000 0000

ITU-T (G.711)

µ-Law

A-Law

1000 0000 1010 1010

1111 1111 1101 0101

0111 1111 0101 0101

0111 1111 0000 0000

Table 1

0010 1010

Transducer Interfaces

Standard handset transducer interfaces are provided by the MT91L60/61. These are:

• The handset microphone inputs (transmitter), pins M+/M-. The nominal transmit path gain may be adjusted

to either 6.0 dB or 15.3 dB. Control of this gain is provided by the TxINC control bit (Gain Control register 1,

address 00h).

• The handset speaker outputs (receiver), pins HSPKR+/HSPKR-. This internally compensated fully

differential output driver is capable of driving the load shown in Figure 3. The nominal receive path gain may

be adjusted to either 0 dB, -6 dB or -12 dB. Control of this gain is provided by the RxINC control bit (Gain

Control register 1, address 00h). This gain adjustment is in addition to the programmable gain provided by

the receive filter.

Serial Port

PCM

Din

Decoder

Filter/Codec and Transducer Interface

Default Bypass

Receive

Filter Gain

0 to -7 dB

(1 dB steps)

-6 dB

-6.0 dB or

0 dB

Receiver

Driver

Side-tone

-9.96 to

+9. 96 dB

(3.32 dB steps)

HSPKR +

75Ω

HSPKR -

75Ω

Handset

Receiver

(150Ω)

-11 dB

PCM

Dout

Encoder

Transmit Filter

GGaainin

0(t10odtoB++7s7teddpBBs)

Transmit Gain

-0.37 dB or 8.93 dB

Transmit

Gain

6.37 dB

Internal To Device

Figure 3 - Audio Gain Partitioning

M+

Transmitter

M- Microphone

External To Device

6

Zarlink Semiconductor Inc.

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