ml7084-001 Oki Semiconductor, ml7084-001 Datasheet - Page 183

• Manufacturer Part Number: ml7084-001
• Description: 4ch Voip Codec
• Manufacturer: Oki Semiconductor

A-4. : Internal data memory for TD_RXDET1 detection level control (TD_RXDET1_TH)
A-5. : Internal data memory for TD_RXDET1 ON guard timer (TD_RXDET1_ON_TM)
A-6. : Internal data memory for TD_RXDET1 OFF guard timer (TD_RXDET1_OFF_TM)
A-7. : Internal data memory for TD_RXDET1 noise detection function control (TD_RXDET1_NDET_CONT)
B. : TD_TXDET1 related
B-1. : TD_TXDET1 enable control register (TD_TXDET1_EN)
B-2. : TD_TXDET1 2100 Hz single tone detection status register (ANS_TXDET1)
B-3. : TD_TXDET1 2100 Hz phase inversion detection status register (ANSPM_TXDET1)
OKI Semiconductor
Initial value : 241Fh (–34 dBm0)
Compute the setting value using the following equation when changing the detection level X.
Equation: 10^((X–3.17)/20)*(2^21)/PI
Example: Detection level of –34 dBm0
Initial value : 0028h (5 ms)
Use the following equation when changing the timer value.
Equation: Guard timer value in ms/0.125 ms
Example: 5 ms
Initial value : 0028h (5 ms)
Use the following equation when changing the timer value.
Equation: Guard timer value in ms/0.125 ms
Example: 5 ms
Initial value : 313Fh (Noise detection function enabled)
By writing 0000h to this internal data memory, the noise detection function of TD_RXDET1 will be disabled.
In the initial state, the noise detection function is enabled, and if a signal other than 2100 Hz is detected,
ANS_RXDET1 will be set to “0” (Not detected) even when a 2100 Hz signal is detected.
0 : Stop (Initial value)
1 : Operate
0 : Not detected (Initial value)
1 : Detected
0 : Not detected (Initial value)
1 : Detected
5/0.125 = 40d = 0028h
Upper limit : 4095.875 ms
Lower limit : 0.125 ms
5/0.125 = 40d = 0028h
Upper limit : 4095.875 ms
Lower limit : 0.125 ms
10^((–34–3.17)/20)*(2^21)/PI = 9247d = 241Fh
Upper limit: –28 dBm0
Lower limit: –34 dBm0
: 5 ms
: 5 ms
(data: 7FFFh)
(data: 0028h)
(data: 0001h)
(data: 7FFFh)
(data: 0028h)
(data: 0001h)
(data: 4811h)
(data: 241Fh)
FEDL7224-001FULL-01
ML7224-001TC
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