ISD5216
6. PIN DESCRIPTION
Pin Name
Pin No.
28-pin
TSOP
4
Pin No.
28-pin
PDIP
25
Pin No.
28-pin
SOIC
25
Functionality
RAC
Row Address Clock; an open drain output. The RAC pin goes LOW T
RACLO1
before the end of each row of memory, and returns HIGH at exactly the end
of each row of memory.
Interrupt Output; an open drain output indicating that a set EOM bit has
been found during Playback, or that the chip is in an Overflow (OVF)
condition. This pin remains LOW until a Read Status command is executed.
This pin allows the internal clock of the Voice record/playback system to be
externally driven for enhanced timing precision. This pin is grounded for
most applications. It is required for the CODEC operation.
Serial Clock Line is part of the I
2
C serial bus. It is used to clock the data into
and out of the I
2
C interface.
Serial Data Line is part of the I
2
C serial bus. Data is passed between
devices on the bus over this line.
Input pin that supplies the LSB for the I
2
C Slave Address.
Input pin that supplies the LSB +1 bit for the I
2
C Slave Address.
Differential positive Input to the microphone amplifier.
Differential negative Input to the microphone amplifier.
Microphone Bias Voltage
AGC Capacitor connection. Required for the on-chip AGC amplifier.
Differential Positive Speaker Driver Output.
Differential Negative Speaker Driver Output. When the speaker outputs are
in use, the AUX OUT output is disabled.
Auxiliary Input.
Auxiliary Output. This is one the analog outputs for the device. When this
output is in use, the SP+ and SP- outputs are disabled.
Serial Digital Audio PCM Input.
Serial Digital Audio PCM Output or I
2
S Input/Output.
Digital audio PCM Frame sync (FS) or I
2
S Word Sync (WS).
Digital audio PCM or I
2
S Serial Clock.
Positive Digital Supply pins. These pins carry noise generated by internal
clocks in the chip. They must be carefully bypassed to Digital Ground to
ensure correct device operation.
Digital Ground pins.
Analog Ground pins.
Positive Analog Supply pin. This pin supplies the low level audio sections for
the device. It should be carefully bypassed to Analog Ground to ensure
correct device operation.
No Connection
INT
5
26
26
MCLK
6
27
27
SCL
SDA
A0
A1
MIC+
MIC-
MICBS
ACAP
SP+
SP-
AUX IN
AUX OUT
SDI
SDIO
WS
SCK
V
CCD
9
11
12
10
16
17
18
19
22
20
24
25
2
3
28
27
7,8
2
4
5
3
9
10
11
12
15
13
17
18
23
24
21
20
1,28
2
4
7
3
10
9
8
12
15
13
17
20
22
24
18
19
1,28
V
SSD
V
SSA
V
CCA
13,14
1,15,21
23
6,7
8,14,22
16
5,6
11,14,23
16
NC
26
19
21
1
See parameters section of the datasheet.
-8-
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