I5216E View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

I5216E

8 TO 16 MINUTE VOICE RECORD/PLAYBACK SYSTEM WITH INTEGRATED CODEC

Winbond 

I5216 SERIES

Advanced Information

PRELIMINARY

MICROPHONE INPUTs

The microphone inputs transfer the voice signal to the on-chip AGC preamplifier, or directly to the

CODEC INPUT MUX, depending on the selected path. The AGC circuit has a range of 45 dB in order

to deliver a nominal 694 mV p-p into the storage array from a typical electret microphone output of 2 to

20 mV p-p. The input impedance is typically 10kΩ.

The MICBS pin provides a 2.2V bias voltage for the external microphone only when the AGC is

powered up. Using this regulated bias voltage results in less supply noise coupling into the MIC+ and

MIC- pins compared to the situation in which the external microphone is powered up through the power

supply. It also saves current during power down.

The ACAP pin provides the capacitor connection for setting the parameters of the microphone AGC

circuit. It should have a 4.7 µF capacitor connected to ground. It cannot be left floating. This is because

the capacitor is also used in the playback mode for the AutoMute circuit or when signal compression is

chosen (AMT0 set). The AutoMute circuit reduces the amount of noise present in the output during

quiet pauses. Tying the ACAP pin to ground gives maximum gain. Tying it to VCCA gives minimum

gain for the AGC amplifier, but cancels the AutoMute function.

CDI1 CDI0

0

0

0

1

1

0

1

1

CODEC ADC

INPUT

INP

SUM2

MIC

No Input

MICBS

MICROPHONE

MIC+

MIC -

AGCCAP

22..22V VVoollttaaggee

reeffeerreenncce e

(AGPD) 1

MIC IN MIC IN

AGC

1

IN

P

(AGPD)

IN

P+

SU

M2

SU

M2

+

(CODEC INPUT MUX

CDI0

CDI1

2

CODEC ADC IN

AGPD

0

1

CONDITION

Power Up

Power Down

15

CIG2

15

VLS1

15

X

14

CIG1

14

VLS0

14

X

13

CIG0

13

VOL2

13

X

12

AXG1

12

VOL1

12

CKD2

11

AXG0

11

VOL0

11

COG2

10

AXPD

10

S1S1

10

COG1

9

INS0

9

S1S0

9

COG0

8

OSPD

8

S1M1

8

CKDV

7

AMT0

7

S1M0

7

MUTE

6

CDI1

6

S2M1

6

HPF0

5

CDI0

5

S2M0

5

HSR0

4

OPS1

4

FLS0

4

I2S0

3

OPS0

3

FLD1

3

LAW1

2

OPA1

2

FLD0

2

LAW0

1

OPA0

1

FLPD

1

DAPD

0

VLPD

0

AGPD

0

ADPD

CFG0

CFG1

CFG2

Publication Release Date: November 30, 2001

- 40

Revision A1

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