MT90868 Zarlink Semiconductor, Inc., MT90868 Datasheet - Page 18

• 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.

MT90868
18
Local Input Channel Delay and Local Channel
Output Advancement
The MT90868 provides users with the capability of
programming the local input channel delay and the
local output channel advancement.
The local input channel delay programming allows all
local input streams to have a different frame
boundary with respect to the local frame pulse (F8o).
It is enabled when the LICDEN bit in the control
register (CR) is high. The local input channel delay
registers (LICDR0 - LICDR31) allows the users to
delay the input channel from 0 to 127 channel for
every local input stream. Figure 13 describes the
Note:
Channel Advance = 2
Channel Delay = 2
Channel Delay = 0
Channel Delay = 1
Channel Advance = 1
Channel Advance =0
Note:
X = 0 to 63
(Default)
Y = 0 to 63
LSTiX
LSTiX
LSTiX
(Default)
FP8o
C8o
LSToY
LSToY
LSToY
FP8o
C8o
3
3
3
2
2
2
3
3
3
1 0
1 0
1 0
Figure 14 - Local Output Channel Advancement Timing Diagram
2
2
2
1 0
1 0
1 0
Figure 13 - Local Input Channel Delay Timing Diagram
7
7
7
6
6
6
7
7
7
5
5
5
Ch 0
Ch127
Ch126
Delay = 1
6
6
6
4
4
4
Ch 0
5
5
5
3
3
3
4
4
Ch1
4
Ch2
2
2
2
3
3
3
1 0
1 0
1 0
2
2
2
Delay = 2
1 0
1 0
1 0
7
7
7
6
6
6
7
7
7
5
5
5
Ch 1
Ch 0
Ch127
6
6
6
4
4
4
5
5
5
Ch 1
3
3
3
Ch2
4
4
4
Ch3
2
2
2
3
3
3
1 0
1 0
1 0
2
2
2
local channel delay timing with different delay
values.
The local output channel advancement programming
allows all local output streams to have a different
frame boundary with respect to the local frame pulse
(F8o). It is enabled when the LOCAEN bit in the CR
register is set to high. The local output channel
advancement
allows the users to advance the output channel from
0 to 127 channels for every local output stream.
Figure 14 describes the local channel output
advancement
advancement values.
1 0
1 0
1 0
7
6
5
Ch0
4
3
6
6
7
2
Ch126
5
Ch125
5
6
6
6
1 0
4
4
registers
5
5
Ch126
Ch127
5
timing
3
3
Ch0
4
4
4
2
2
3
3
3
1 0
1 0
2
Advance Information
2
2
Advance = 2
1 0
1 0
1 0
7
7
7
with
(LOCAR0
6
6
6
7
7
7
Ch127
5
Ch126
5
Ch125
5
6
6
6
Advance = 1
4
4
4
Ch127
5
5
5
different
3
3
3
Ch1
4
Ch0
4
4
2
2
2
3
3
3
1 0
1 0
1 0
2
2
2
-
1 0
1 0
1 0
7 6
7 6
7 6
LOCAR31)
7 6
7 6
7 6
channel