參數(shù)資料
型號： T8105A
英文描述： H.100/H.110 Interface and Time-Slot Interchangers
中文描述： H.100/H.110接口和時隙Interchangers
文件頁數(shù)： 80/112頁
文件大?。?/td> 1408K
代理商： T8105A
76
Lucent Technologies Inc.
Advance Data Sheet
November 1999
H.100/H.110 Interfaces and Time-Slot Interchangers
Ambassador T8100A, T8102, and T8105
3 Using the TSI Devices
(continued)
3.4 Using the LAR, AMR, and IDR for Connections
(continued)
3.4.2 Setting Up H-Bus Connections
(continued)
Figure 23 illustrates how a CAM connection is made from the perspective of registers and the memory locations.
Note that each half of the connection (i.e., the FROM and the TO) requires a separate setup, though each half will
point to the same location in the H-bus data memory.
Following Figure 23, some simple programming examples are shown using pseudoassembler code. The local-to-
local and H-bus-to-local switching examples from Figure 22 and Figure 23 are reused in code examples #2 and #3.
The connections are referred to in stream, time-slot format.
5-6116aF
A. First Half of Connection, H-Bus Side
Figure 23. CAM Programming, H-Bus-to-Local Connection
0000 0111
1011 0000
XXXX XXXX
0000 0111
AMR
LAR (UNUSED)
IDR
WRITE TO TIME-SLOT
HOLDING REGISTER
FIRST TRANSFER:
CAM PROGRAMMING EXAMPLE:
CTLS/STREAM
LOCATION USED—NOT EMPTY
TIME SLOT
TAG
HOLDING REGISTERS
1011 0001
XXXX XXXX
000 01110
AMR
LAR (UNUSED)
IDR
WRITE TO CONTROL/STREAM
HOLDING REGISTER
SECOND TRANSFER:
CTLS/STREAM
TIME SLOT
TAG
HOLDING REGISTERS
1011 0010
XXXX XXXX
0011 0001
AMR
LAR (UNUSED)
IDR
WRITE TO TAG
HOLDING REGISTER
THIRD TRANSFER:
CTLS/STREAM
TIME SLOT
TAG
HOLDING REGISTERS
1110 0000
XXXX XXXX
1110 0000
AMR
LAR (UNUSED)
IDR (MUST = AMR)
TRANSFER HOLDING
REGISTERS TO NEXT FREE
LOCATION IN EVEN CAM
LOAD CAM:
CTLS/STREAM
TIME SLOT
TAG
HOLDING REGISTERS
0000 0111
000 01110
0000 0111
DIRECTION BIT: FROM
BUS TO DATA MEMORY
000 01110
0000 0111
0011 0001
DATA LOCATION 49
0011 0001
0000 0111
000 01110
(NOT EMPTY)
(EMPTY)
(LOCATION USED—NOT EMPTY)
(LOCATION NOT USED—EMPTY)
000 01110
0000 0111
EVEN CAM
PIPELINE SRAM
1011 0011
XXXX XXXX
AMR
LAR (UNUSED)
WRITE TO TAG
HOLDING REGISTER
FOURTH TRANSFER:
IDR
SUBRATE TAG
CONTROL
MSB
(BIT 0)
CONNECT FROM H-BUS 14, 7 TO LOCAL 3, 29, KEEP DATA IN LOCATION 49
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