MT92210 Zarlink Semiconductor, MT92210 Datasheet - Page 105

• Manufacturer Part Number: MT92210
• Description: 1023 Channel Voice Over ip (VoIP) Processor
• 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:
Received Octet Count
I
PE
PL
RX Channel
Structure Address
RX Connection
Structure Address
Packet Base
Pointer
Packet Length
Local Bus Time
Stamp
Field
Field
Figure 53 - 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.
Total number of bytes received on this channel so far. Every packet that gets to this
structure will be included. This field increments by the UDP Length - 8 each time
packet is received.
b14
Table 35 - Fields and Description (continued)
b13
b12
I
Table 36 - 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
Description
b6
b5
b4
PL
b3
0
b2
0
b1
1
b0
1
MT92210
105