MT92210 Zarlink Semiconductor, MT92210 Datasheet - Page 97

• Manufacturer Part Number: MT92210
• Description: 1023 Channel Voice Over ip (VoIP) Processor
• Manufacturer: Zarlink Semiconductor

Data Sheet
The format of the xxPCM Event Report is the following:
U2
U
O
I
I2
RPM
RSx
SL
Field
Figure 50 - RX Disassembly Event Report Queue - xxPCM Channel Report
+A
+C
+E
+0
+2
+4
+6
+8
b15
U2
b14
U
b13
Underrun Detected 2. This bit is set when a packet is received with a remote
time stamp that would require the first sample of the packet to be output on the
TDM bus one or many frames ago. This means that the received packet was
late as compared to its expected arrival time.
Underrun Detected. This bit is set when a packet is received with a remote time
stamp that would require the first sample of the packet to be output on the TDM
bus one or many frames ago after the worst expected packetization delay was
added to the arrival time. For example, if a 44 sample PCM packet is
processed by a structure that expects 88 samples as the maximum packet
size, it may only be output on the TDM bus in 44 frames; a received time stamp
that would contradict this requirement would cause an underrun slip.
Overrun Detected. This bit is set when a packet is received with a remote
timestamp and number of samples that require the last sample of the packet to
be sent out on the TDM bus with a delay greater that the Maximum Used
Samples in Circular Buffer.
When set, a packet has been received for the first time by the RX xxPCM
Channel Structure.
When set, a packet has been received for the first time by the Common PDV
Absorption structure.
Reset PDV Monitoring Completed. When this bit is set, the RPM bit in the RX
xxPCM Channel Structure has been cleared by hardware and a new PDV
monitoring period has been started.
Reset Total Slip Offset Delta Completed. When this bit is set, the Total Slip
Offset Delta has been reset in the Common PDV Absorption structure.
Samples lost. When set, the Samples Lost[31:0] field is non-zero, meaning that
one or many samples have been lost between packets.
O
b12
I
RX xxPCM Channel Structure Address [20:5]
Table 33 - Fields and Description
b11
I2
RPM
Local Bus Time Stamp [31:16]
b10
Local Bus Time Stamp [15:0]
Remote Time Stamp [31:16]
Zarlink Semiconductor Inc.
Remote Time Stamp [15:0]
Samples Lost [31:16]
Samples Lost [15:0]
RSx
b9
SL
b8
BL2
b7
PLX
b6
Description
BL4
b5
BL3
b4
XD
b3
b2
b1
b0
0
MT92210
97