CDB6422 查看數據表（PDF） - Cirrus Logic

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CDB6422

Enhanced Full-Duplex Speakerphone IC

Cirrus Logic 

CS6422

3.4 Register 1

b15 b14 b13 b12 b11 b10 b9

THDet

Taps

TVol

00

10

1010

2

A

b8 b7 b6 b5

b4

b3 b2 b1 b0

RSD NCC AuNECD 0 0 1 0

0

00

0

0

2

Bits

15-14

13-12

11-8

7

6-5

4

Name

THDet

Taps

Function

Tx Half-duplex Detection

threshold

AEC/NEC Tap allocation

TVol

Tx Volume control

RSD

NCC

Rx Suppression Disable

NEC Coefficient Control

AuNECD Auto re-engage NEC Disable

Word

00*

01

10

11

00

01

10*

11

0000

0001

---

0100

---

1010*

1011

---

1101

1110

1111

0*

1

00*

01

10

11

0*

1

* Denotes reset value

Table 4. Register 1 Bit Definitions

Operation

6 dB

9 dB

12 dB

reserved

444/64 (55.5 ms/8 ms)

380/128 (47.5 ms/16 ms)

316/192 (39.5 ms/24 ms)

252/256 (31.5 ms/32 ms)

+30 dB

+27 dB

---

+18 dB

---

+0 dB

-3 dB

---

-9 dB

-12 dB

mute

enable Rx suppression

disable Rx suppression

Normal

Clear

Freeze

reserved

enable Auto NEC

disable Auto NEC

DS295F1

17

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