ml50000 Oki Semiconductor, ml50000 Datasheet - Page 7

• Manufacturer Part Number: ml50000
• Description: Echo Canceler
• Manufacturer: Oki Semiconductor

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28-pin
SSOP
11
12
13
—
—
—
—
—
—
—
—
16
17
18
Pin
56-pin
QFP
11
12
13
15
20
22
27
29
30
44
45
28
31
32
X1/CLKIN
Symbol
SYNC
SOUT
ROUT
PD11
PD12
PD13
PD14
PD15
PD0
PD5
PD6
HD
X2
Type
I/O
O
O
O
I
I
I
Sync signal for transmit/receive serial data.
This pin uses the external SYNC or SYNCO.
Input the PCM CODEC transmit/receive sync signal (8 kHz).
Receive serial data.
Outputs the PCM signal synchronized to SYNC and SCK.
This pin is in a high impedance state during no data output.
This is the bidirectional bus pin for parallel data transfer between the
master chip and slave chip when used in a cascade connection.
The PD15 pin corresponds to MSB.
This pin is in a high impedance state during no data
output. Data is loaded in at the falling edge of SFx.
Controls the howling detect function. This pin detets and cancels a howling
generated during hand-free talking for acoustic system.
This function is used to cancel acoustic echoes.
• Single Chip or Master Chip in a Cascade Connection
• Slave Chip in a Cascade Connection
Fixed at "L"
External input for the basic clock (17.5 to 20 MHz) or for the crystal
oscillator.
When the internal sync signal (SYNCO, SCKO) is used, input the basic
clock of 19.2 MHz.
Crystal oscillator output.
Used to configure the oscilation circuit.
Refer to the internal clock generator circuit example.
Transmit serial data.
Outputs the PCM signal synchronized to SYNC and SCK.
This pin is in a high impedance state during no data output.
"L": Howling detector ON
"H": Howling detector OFF
Description
ML50000
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