MT92220BG Zarlink Semiconductor, MT92220BG Datasheet - Page 129

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

Data Sheet
As in xxPCM, the RX HDLC channel structure can request the generation of clock recovery events. It can also
generate Event Reports, the format of which is the following:
I
PE
PL
RX Channel
Structure Address
RX Connection
Structure Address
Packet Base
Pointer
Packet Length
Local Bus Time
Stamp
Field
Figure 67 - RX Disassembly Event Report Queue - HDLC / CPU Channel Report
+A
+C
+E
+0
+2
+4
+6
+8
b15
Set at the reception of the first packet on this RX HDLC/CPU Channel Structure.
Policing Error. Indicates that the HDLC / CPU packet was discarded because it caused
the policing bucket to overflow.
Packet Lost. When set, this bit indicates that a packet was lost due to the lack of room in
the Circular buffer to which this packet was to be written.
Base address of the RX HDLC/CPU Channel Structure that generated this report
structure.
Base address of the RX Connection Structure that led to the RX Channel Structure which
generated this report structure.
Pointer to the first voice byte of this packet in the RX Circular buffer. The pointer is
relative to the base address of the RX Circular Buffer. This field is only defined for RX
CPU Packets.
Length of the packet in bytes defined by the number of actual bytes used in the circular
buffer. This field is only defined for RX CPU Packets.
Local Bus Time Stamp present at the time of reception of the packet that caused this
report structure to be generated.
b14
b13
b12
I
Table 52 - Fields and Description
RX Connection Structure Address [20:5]
b11
RX Channel Structure Address [20:5]
Local Bus Time Stamp [31:16]
b10
Local Bus Time Stamp [15:0]
Zarlink Semiconductor Inc.
Packet Base Pointer [15:0]
b9
b8
PE
Packet Length [11:0]
b7
Description
b6
b5
b4
PL
b3
0
b2
0
b1
1
b0
1
MT92220
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