MT92210 Zarlink Semiconductor, MT92210 Datasheet - Page 117

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

Data Sheet
The format of the RTP HDLC Address LUT Structure is the following:
9.2
TX Connection Structure
Base for Address
TI
N
HDLC Address
LUT Base for
HDLC Stream
Add Range
Note
Field
TX TDM Data Formats
Field
+(N-2)*4+0
+(N-2)*4+2
+(N-1)*4+0
+(N-1)*4+2
This field serves to locate in external SSRAM A a look-up table used to associated
HDLC addresses with TX Connection Structures. It points to 64-byte increments.
Defines the size of the HDLC Address LUT Structure. “00000” = address ranges
between 0 and 511; “00001” = address ranges between 0 and 15; “00010” = address
ranges between 0 and 31; “00011” = address ranges between 0 and 47;...;”11111” =
address ranges between 0 and 495.
Indexing in this structure is done implicitly using the HDLC stream number in the TX
TDM Control Memory. This table is consulted every time an HDLC packet reception
completed.
+0
+2
+4
+6
Base address of the TX Connection Structure that will be used to send HDLC
packets with the address shown. When this field is 0000h, the address is deemed
invalid and the packet is discarded.
Time Stamp Insert. When ‘0’, the time stamp will be inserted in the packet as it is
received in the HDLC packet. When ‘1’, the time stamp in the HDLC packet will be
treated as an offset from the current bus time stamp.
Number of HDLC addresses supported as defined by Add Range in the HDLC
Stream to HDLC Address LUT Structure.
b15
b14
Figure 63 - HDLC Address LUT (RTP)
Table 41 - Fields and Description
Table 42 - Fields and Description
TX Connection Structure Base [20:5] for Address = N-2
TX Connection Structure Base [20:5] for Address = N-1
b13
TX Connection Structure Base [20:5] for Address = 0
TX Connection Structure Base [20:5] for Address = 1
b12
Zarlink Semiconductor Inc.
b11
b10
b9
b8
Description
b7
Description
b6
b5
b4
b3
b2
b1
0
0
0
0
b0
TI
TI
TI
TI
MT92210
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