msm7708-02 Oki Semiconductor, msm7708-02 Datasheet - Page 22

• Manufacturer Part Number: msm7708-02
• Description: Serial Register Interface Adpcm Codec For Telephone Recording
• Manufacturer: Oki Semiconductor

¡ Semiconductor
FUNCTIONAL DESCRIPTION
Control Register Description
(1) CR0 (Basic Operation Mode Settings)
CR0
Initial value
B7: .............. PCM interface companding law selection
B6: .............. Automatic suppression function control 0: suppression off
B5: .............. Power down (entire unit)
B4: .............. Power down (transmit side only)
B3: .............. Power down (receive side only)
B2: .............. The sounder output amp (SAO) and receiver system output amp
B1: .............. Selection of sounder system output (SAO) or receiver system output
B0: .............. AOUT+, AOUT– power on control
SEL
A/m
B7
0
1: suppression on
When transmit voice is detected, receive level is suppressed automatically
by 6 dB.
ORed with the inverted external power down signal. When using this
data, set PDN to "1".
(VFRO) operation control
0: The output pin selected by CR0 - B1 operates.
1: The sounder system output (SAO) and receiver system output (VFRO)
both operate.
0: VFRO
SGR potential is output to the non selected pin.
0: AOUT+, – power down
1: AOUT+, – power on
B6
—
0
1: SAO
PDN
ALL
B5
0
PDN
0: Power ON
B4
TX
0
0: Power ON
0: Power ON
PDN
B3
RX
0
0: m-law1: A-law
1: Power down
SA, VF
OUT
B2
0
1: Power down
1: Power down
VFRO
SAO/
B1
0
MSM7708-02
AOUT
PON
22/38
B0
0