MT92220BG Zarlink Semiconductor, MT92220BG Datasheet - Page 98

• Manufacturer Part Number: MT92220BG
• Description: Description = 1023 Channel Voice Over IP/AAL2 Processor ;; Package Type = Epbga ;; No. Of Pins = 608
• Manufacturer: Zarlink Semiconductor

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Energy Counter
Underrun Count
Energy Decrease/Increase
Threshold
amp_iir_rise_length
amp_iir_fall_length
holdover_time
ceiling_exp_half_life
floor_exp_half_life
ceiling_exp_start_v
floor_exp_start_v
flux_ratio
max_floor_level
min_threshold_while_talking
min_threshold_while_silent
flux_min_threshold
ratio_while_silent
ratio_while_talking
First Energy Period
Subsequent Energy Period
Preprog Packet Length - 1
Preprogrammed Packet
Pointer
Field
Table 38 - Fields and Description (continued)
Counter used to frame energy estimation period. This counter starts off at zero
and counts up to either First Energy Period or Subsequent Energy Period.
When it reaches it terminal counter, the comfort noise level is updated internally
and may be resent. This field is reset to zero when the VAD identifies a packet
as being non-silent. This field must be initialized to 0 by software.
Free-running 16-bit underrun counter. This counter monitors underruns that
occur on the TSST adjacent to the TSST that is being silence suppressed.
When the AS bit is cleared, TSST0 & TSST1 are associated. When the AS bit is
set, TSST0 & TSST2 are associated.
Number of dB of difference (vs the last sent comfort noise packet) required to
do retransmission of a new (updated) comfort noise packet. 00h is illegal; 01h
means retransmit on any difference; 02h means retransmit on a 2 dB
difference; writing this value to 128 will prevent all retransmission.
Should be initialized to 3 by software.
Should be initialized to 7 by software.
Should be initialized to 16 by software.
Should be initialized to 300 by software.
Should be initialized to 2716 by software.
Should be initialized to 17 by software.
Should be initialized to 17 by software.
Should be initialized to 8 by software.
Should be initialized to 4000 by software.
Should be initialized to 8 by software.
Should be initialized to 32 by software.
Should be initialized to 32 by software.
Should be initialized to 57 by software.
Should be initialized to 32 by software.
Number of frames that will be averaged out to produce the estimation of the
comfort noise energy when silence is first detected.
Number of frames that will be averaged out to produce the estimation of the
comfort noise energy for comfort noise refresh packets.
Length of the preprogrammed comfort noise packet in bytes (minus 1). To send
single byte comfort noise packets (the basic non-spectral mode), this field must
be set to 00h.
This field points to the location in SSRAM A at which the preprogrammed
packet is located.
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