msm7586-01 Oki Semiconductor, msm7586-01 Datasheet - Page 39

• Manufacturer Part Number: msm7586-01
• Description: Shift Qpsk Modem/adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
(6) CRC5 (Control of Switches, etc.)
(7) CRC6 (VOX Function Control)
CRC5
Initial Value
CRC6
Initial Value
B7, B6: .......SW1, SW2 control
B5: .............. SW3 control
B4: .............. SW4/5 control
B2, B1, B0: .TOUT3 to 1 control
B7: .............. VOX function ON/OFF
B6, B5: .......Transmit side voice/silence detector level settings (For the signal of 1kHz)
B4: .............. Hangover time (refer to Fig. 7) settings
B3: .............. Receive side VOX input signal
B2: .............. Receive side background noise level setting
B1, B0: .......External setting background noise level
MSM7586-01
MSM7586-03
ON/OFF
CONT
SW1
VOX
B7
B7
0
0
(0,0): –30 dBm0
(1,0): –40 dBm0
(0,0): –20 dBm0
(1,0): –32 dBm0
0: Internal background noise transmit
When using this data, set the VOXI pin to "0."
0: Internal automatic setting
Internal automatic setting Æ Sets to the voice signal level when B3 (VOXI)
changes from "1" to "0."
(0,0): No noise
(1,0): –45 dBm0
CONT
LVL1
SW2
B6
B6
ON
0
0
CONT
LVL0
SW3
B5
B5
ON
0
0
0: Open
0: Open
0: SW4 open, SW5 closed
1: SW4 closed, SW5 open
0: TOUT3 to 1 disable
1: TOUT3 to 1 enable
SW4/5
(0,1): –35 dBm0
(1,1): –45 dBm0
(0,1): –26 dBm0
(1,1): –38 dBm0
(0,1): –55 dBm0
(1,1): –35 dBm0
CONT
TIME
OFF
B4
B4
0
0
1: Closed
1: Closed
1: External (by B1, B0) setting
0: OFF
VOX
B3
B3
—
IN
0
0
0: 160 ms
1: Voice receive signal transmit
LEVEL SEL
RX NOISE
TOUT3
CONT
B2
B2
0
0
1: ON
MSM7586-01/03
RX NOISE
TOUT2
1: 320 ms
CONT
LVL1
B1
B1
0
0
RX NOISE
TOUT1
CONT
LVL0
B0
B0
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0
0