ml7029 Oki Semiconductor, ml7029 Datasheet - Page 16

• Manufacturer Part Number: ml7029
• Description: Multifunction Adpcm Codec
• Manufacturer: Oki Semiconductor

FUNCTIONAL DESCRIPTION
Control Registers
(1) CR0 (Basic operating mode setting)
Note: Initial Value: Reset state by PDN (*: Don’t care)
B7, B6, B4 to B0: Not used (These pins are used to test the device. They should be set to “0” during normal
B5:
(2) CR1 (ADPCM operating mode setting)
B7, B6:
B5:
B4:
B3:
B2:
B1:
B0:
* The reset width should be 1/f
OKI Semiconductor
The transmit and receive sides cannnot be reset separately.
They must be reset at the same time.
Initial Value
Initial Value
CR0
CR1
ADPCM of transmit reset (specified by G.726); 1/Reset*
ADPCM of receive reset (specified by G.726);
ADPCM transmit data mute;
ADPCM receive data mute;
Not used (This pin is used to test the device. It should be set to “0” during normal operation.
Receive side PAD;
ADPCM data compression algorithm select (output bit select);
(0, 0): 4-bit output (32 kbps)
(0, 1): 8-bit output (64 kbps)
(1, 0): 3-bit output (24 kbps)
(1, 1): 2-bit output (16 kbps)
MODE1
operation.)
B7
Power-down (entire system);
0 Red with the inverted external power-down signals.
When using this data, set the RDN pin to “1”.
B7
—
0
*
MODE0
sample
B6
B6
—
0
*
µs or more.
TX RESET RX RESET TX MUTE RX MUTE
PDN ALL
Data rates in parentheses: when SYNC = 8 kHz
B5
B5
0
0
0/Power-on, 1/Power-down
1/ Reset*
1/Mute
1/Mute
1/inserted in the receive side voice path, 12 dB loss
0/no PAD
B4
B4
—
0
*
B3
B3
—
0
*
B2
B2
0
—
*
B1
—
B1
—
*
*
FEDL7029-03
RX PAD
ML7029
B0
B0
—
0
*
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