15108EI Просмотр технического описания (PDF) - Winbond

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15108EI

SINGLE-CHIP 1 TO 16 MINUTES DURATION VOICE RECORD/PLAYBACK DEVICES WITH DIGITAL STORAGE CAPABILITY

Winbond 

ISD5100 – SERIES

7. FUNCTIONAL DESCRIPTION

7.1. OVERVIEW

7.1.1 Speech/Voice Quality

The ISD5100 ChipCorder Series can be configured via software to operate at 4.0, 5.3, 6.4 or 8.0 kHz

sampling frequency to select appropriate voice quality. Increasing the duration decreases the

sampling frequency and bandwidth, which affects audio quality. The table in the following section

shows the relationship between sampling frequency, duration and filter pass band.

7.1.2. Duration

To meet system requirements, the ISD5100 Series are single-chip solution, which provide 1 to 16

minutes of voice record and playback, depending upon the sample rates chosen.

Sample Rate

(kHz)

ISD5116

Duration [1]

ISD5108

ISD5104

8.0

8 min 44 sec 4 min 22 sec 2 min 11 sec

6.4

10 min 55 sec 5 min 27 sec 2 min 43 sec

5.3

13 min 6 sec 6 min 33 sec 3 min 17 sec

4.0

17 min 28 sec 8 min 44 sec 4 min 22 sec

[1] Minus any pages selected for digital storage

ISD5102

1 min 5 sec

1 min 21 sec

1 min 38 sec

2 min 11 sec

Typical Filter

Knee (kHz)

3.4

2.7

2.3

1.7

7.1.3. Flash Technology

One of the benefits of Winbond’s ChipCorder technology is the use of on-chip Flash memory, which

provides zero-power message storage. The message is retained for up to 100 years (typically) without

power. In addition, the device can be re-recorded over 10,000 times (typically) for the digital data and

over 100,000 times (typically) for the analog messages.

A new feature has been added that allows memory space in the ISD5100 Series to be allocated to

either digital or analog storage when recorded. The fact that a section has been assigned digital or

analog data is stored in the Message Address Table by the system microcontroller when the recording

is made.

7.1.4. Microcontroller Interface

The ISD5100 Series are controlled through an I2C 2-wire interface. This synchronous serial port

allows commands, configurations, address data, and digital data to be loaded into the device, while

allowing status, digital data and current address information to be read back from the device. In

addition to the serial interface, two other status pins can feedback to the microcontroller for enhanced

Publication Release Date: October, 2003

-9-

Revision 0.2

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