MT90868 Zarlink Semiconductor, Inc., MT90868 Datasheet - Page 45

• Manufacturer Part Number: MT90868
• Description: High Bandwidth Digital Switch - 8,192 x 8,192 channels among local streams and 1,024 x 1,024 channels among two selected backplane streams
• Manufacturer: Zarlink Semiconductor, Inc.

Advance Information
*Note: Only Bit 7-0 will be used for per-channel message mode.
14 - 9
15 - 2
8 - 0*
LMSC
1 - 0
Bit
Bit
15
15
15
0
LSAB
14
14
5
0
LSAB5 - 0
LCAB8 - 0
LTM1 - 0
Unused
LMSC
Name
Name
LSAB
13
13
4
0
LSAB
12
12
3
0
Table 31 - Local Connection Memory High (LCMH) Bits
Table 30 - Local Connection Memory low (LCML) Bits
Local Mode Selection Control: When this bit and the LTM0, LTM1 bits in the local
connection memory high are low, the "backplane-to-local" switching is enabled.
When this bit is high, the content of the LTM0, LTM1 bits in the local connection
memory high select one of the operation modes described in the table below:
Local Source Stream Address Bits: The binary value of these 6 bits represents
the data stream number for the source (local or backplane) connection.
Local Source Channel Address Bits: The binary value of these 9 bits represents
the channel number that is the source (local or backplane) connection.
Reserved.
Local TM Bits: These two bits control the LSTo output
LSAB
11
11
2
0
LMSC
LMSC
LSAB
0
1
1
1
1
10
10
LTM1
1
0
0
0
0
1
1
LSAB
LTM1 Bit in LCMH
9
0
LTM1 Bit in LCMH
9
0
LTM0
LCAB
0
0
1
0
1
0
8
8
8
0
0
0
1
1
LCAB
7
7
7
0
LMSC Bit in LCML
Description
Description
LCAB
LTM0 Bit in LCMH
LTM0 Bit in LCMH
6
6
6
0
0
1
1
1
1
LCAB
0
0
1
0
1
5
5
5
0
LCAB
4
4
4
0
Per-Channel Operation Mode
'Backplane-to-local' switching
.
'Local-to-local' switching
Per-Channel Operation Mode
Per-Channel Operation Mode
LCAB
'Backplane-to-local' switching
3
3
3
0
High Impedance
BER Test Mode
'Local-to-local switching'
Msg Mode
High Impedance
BER Test Mode
LCAB
Msg Mode
2
2
2
0
MT90868
LCAB
LTM
1
1
1
1
.
LCAB
LTM
0
0
0
0
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