TSI-2 AGERE [Agere Systems], TSI-2 Datasheet - Page 39

• Manufacturer Part Number: TSI-2
• Description: 2k x 2k Time-Slot Interchanger
• Manufacturer: AGERE [Agere Systems]

Data Sheet, Revision 3
September 21, 2005
Table 6-20. Reserved_0 (Read/Write)
This register is reserved for use by Agere Systems.
6.6 Connection Store Generator Registers
The connection store is not initialized on powerup nor reset. Although it can be manually initialized by writing all locations
via the microprocessor interface, the CSG is provided to independently fill the connection store with known data. The user
can program the CSG to fill with a variety of patterns or with user-defined fixed data. Since the connection store is greater
than 16 bits wide, the CSG, in general, has pairs of registers associated with controlling the data to be loaded.
Table 6-21. CSG_Control (Read/Write)
This register provides general control over the CSG.
Agere Systems Inc.
Address
0x00400
Address
0x00016
15:4 Unused.
Bit
15:3
3
2
1
0
1:0
Bit
2
Enable_Stream_Switching. Controls the enable for filling the Stream_Select field of the con-
nection store.
0 = Stream switching is disabled. The Stream_Select field of the connection store RAM is filled
1 = Enables stream switching. The Stream_Select fields of the connection store is filled with
Note: In this mode, all other connection store RAM locations are filled with N-to-N mapping.
LFSR_Seed_Control. Selects user-definable seed value or predefined seed value for the
pseudorandom pattern generator.
0 = Default seed is loaded into the linear feedback shift register (LFSR) (0x3FFFFFFF).
1 = The 31-bit LFSR is loaded with the contents of the CSG_Seed registers.
CSG_Mode_Select. Defines the type of pattern that will be filled into the connection store.
0 = Channel N to channel N mapping.
1 = Pseudorandom generated bit pattern (8-bit LFSR).
CSG_Enable. Enables the pattern generator. After setting the other CSG registers, setting this
bit to a 1 triggers the CSG to start programming of the connection store RAM.
0 = Pattern generator off.
1 = Pattern generator on.
Note: During the CSG operation, the function of the switch fabric is halted and the outputs of
Unused.
Reserved.
Unused.
with pseudorandom data.
the contents of CS_Source_Stream_Select (see
associated with the stream specified in CS_Destination_Stream_Select (see
the CHIs and HSLs are nondeterministic. To reuse the CSG for subsequent
programming of the connection store, this bit must be set back to 0 then to a 1.
Name/Description
Name/Description
Table 6-33 on page
2k x 2k Time-Slot Interchanger
42) for all time slots
Table
6-33).
Default
Default
TSI-2
—
—
—
—
0
0
0
0
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