msm7731-01 Oki Semiconductor, msm7731-01 Datasheet - Page 23

• Manufacturer Part Number: msm7731-01
• Description: Multifunction Pcm Codec Voice Signal Processor
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Rin input level vs. echo attenuation
(Measuring conditions) Rin signal
E.R.L. level vs. echo attenuation (with GLPAD)
(Measuring conditions) Rin signal
45
40
35
30
25
20
15
10
45
40
35
30
25
20
15
10
5
0
5
0
–50
–40
–35
–45
–30
E.R.L
Delay time
ATT, GC
Noise floor
Rin input level : –20dBm (with GLPAD= 0dB)
Delay time
ATT, GC
Noise floor
GLPAD=±0dB
GLPAD=±6dB
GLPAD=±12dB
GLPAD=±18dB
–25
–40
E.R.L vs. echo attenuation (with GLPAD)
RIN input level vs. echo attenuation
–20
–35
Rin input level [dBm]
–15
: 5 kHz band white noise
: –6dB
: 4ms
: OFF
: –60dBm (P-message filter unused)
: 5 kHz band white noise
: –26dBm (with GLPAD= 6dB)
: –32dBm (with GLPAD= 12dB)
: –38dBm (with GLPAD= 18dB)
: 4ms
: OFF
: –60dBm (P-message filter unused)
E.R.L. [dB]
–10
–30
–5
–25
0
5
–20
10
15
–15
20
MSM7731-01
–10
25
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