isd5216 Winbond Electronics Corp America, isd5216 Datasheet - Page 39

• Manufacturer Part Number: isd5216
• Description: 8 To 16 Minutes Voice Record/playback Device With Integrated Codec
• Manufacturer: Winbond Electronics Corp America

INT (Interrupt)
INT is an open drain output pin. The Winbond ISD5216 Interrupt pin goes LOW and stays LOW when
an Overflow (OVF) or End of Message (EOM) marker is detected. Each operation that ends in an
EOM or OVF generates an interrupt, including the message cueing cycles. The interrupt is cleared by
a READ STATUS instruction that gives a status byte on the SDA line.
MCLK (Master Clock Input)
The Master clock input for the Winbond ISD5216 product has an internal pull-down device. Normally,
the Winbond ISD5216 ChipCorder section is operated at one of four internal rates selected for its
internal oscillator by the Sample Rate Select bits. If the internal oscillator is powered down
(configuration bit OSPD set to ONE), the device is clocked through the MCLK pin as shown in the
section
this input should be connected to V
SCK
Bit clock for PCM or I2S audio data
WS
The Word Sync (Frame Sync) signal is used to differentiate between data for left and right channel in
I
SDIO
For PCM, this is the output signal from the CODEC, it should be connected to the input pin of the
receiving device.
In I
the other device connected to the I
SDI
This pin is only used when the CODEC is in PCM mode, this signal provides digital audio input to the
CODEC it should be connected to the output pin of the transmitting device.
MIC+, MIC- (Microphone Input +/-)
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 20 kŸ  d ifferential and 13.3 kŸ differential when the
CODEC INPUT MUX MICIN path is selected.
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
2
S. For PCM it signals the beginning of the word.
2
S mode, this is a bi-directional pin that should be connected to the bi-directional I
ISD5216 Analog Structure (right half)
7.8.3. CODEC Iinterface Pincs
7.8.4. ANALOG I/O PINS
2
SSD
S bus.
.
description on page 32. If an external clock is not used,
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Publication Release Date: Jan. 31, 2006
ISD5216
2
S data pin on
Revision B.4