mt90502ag2 Zarlink Semiconductor, mt90502ag2 Datasheet - Page 56

• Manufacturer Part Number: mt90502ag2
• Description: Multi-channel Aal2 Sar
• Manufacturer: Zarlink Semiconductor

written byte Offset
Encountered (in
Encountered (in
TDM RP / First
Highest Delay
frames) [11:0]
Last UUI [3:0]
frames) [11:0]
Counter[15:0]
Lowest Delay
CPS-Packet
Expected LI
# of EDU
Field
LI0
SL
Table 22 - CPS-Packet Disassembly Structure (PCM/ADPCM) Fields (continued)
Name of Field
Lowest delay
encountered
Last UUI
Highest delay
encountered
CPS-Packet
counter
Number of
EDU
SID Last
TDM RP/First
written byte
offset
Length
indicator of
zero
Expected LI
Byte Address
+10/b15:b14
+A/b15:b12
+E/b15:b13
Offset/Bits
+10/b13:b8
+C/b15:b0
+8/b11:b0
+A/b11:b0
+E/b9:b0
+E/b10
Zarlink Semiconductor Inc.
Used
MT90502
56
Lowest delay inserted by the hardware’s buffer. This
is a signed number: 0 is a valid delay of less than
one frame,
-1 is an invalid delay and indicates that one or more
slips have occurred.
Last received UUI bits 3:0.
Highest delay inserted by the hardware’s buffers.
This is a signed number. All delays up to Max PDV
in Frames are acceptable. Beyond this point, one or
more slips have occurred.
Free running count of received CPS-Packets (SID
and non-SID included).
Number of data units in each packet.
‘000’ = 8 frames or 1 EDU
‘001’ = 16 frames or 2 EDU
‘010’ = 24 frames or 3EDU
‘011’ = 32 frames or 4EDU
‘100’ = 40 frames or 5 EDU
‘101’ = 44/88 frames PCM/ADPCM32
‘110’ = 40/80 frames PCM/ADPCM32
‘111’ = 64 frames or 8 EDU
When ‘1’, the last packet received was a SID. This
field is used to generate the ADPCM reset if the first
voice packet after a SID contains ADPCM data. This
bit should be initialized to ‘1’ so that the first ADPCM
packet resets the decoder.
Positive offset between the circular buffer write
pointer used to write the first byte of a CPS-Packet
and the TDM_circular_buffer_read_pointer + 1.
initialize to “00_0000_0000”
Indicates how to treat CPS-Packets with the LI field
equal to 0.
‘00’ = reserved.
‘01’ = CPS-Packet is SID, discard CPS-Packet.
‘10’ = CPS-Packet is SID, treat CPS-Packet.
‘11’ = CPS-Packet is SID, treat CPS-Packet and
generate report structure.
The LI expected in all voice packets. If the received
LI does not match the Expected LI and RL = ‘1’, then
an error report structure will be generated. Note: the
CPS-Packet will still be treated.
Description of Field
Data Sheet