MT90870AG Zarlink, MT90870AG Datasheet - Page 10

• Manufacturer Part Number: MT90870AG
• Description: Switch Fabric 12K x 12K/8K x 4K 1.8V/3.3V 272-Pin BGA Tray
• Manufacturer: Zarlink

Specifications of MT90870AG

• Package: 272BGA
• Number Of Ports: 32
• Fabric Size: 12K x 12K|8K x 4K
• Switch Core: Non-Blocking|Blocking
• Port Speed: 2.048|4.096|8.192|16.384 Mbps
• Operating Supply Voltage: 1.8|3.3 V

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Backplane and Local Clock Timing:
Item 2, Backplane Frame Pulse Setup
Time before C8i clock falling edge
Item 3, Backplane Frame Pulse Hold Time
from C8i clock falling edge
Figure 20, Backplane and Local Clock
Timing Diagram for ST-BUS
Figure 22, ST-BUS Backplane Data
Timing Diagram (8 Mb/s, 4 Mb/s, 2 Mb/s)
Figure 23, ST-BUS Backplane Data
Timing Diagram (32 Mb/s, 16 Mb/s)
Figure 26, ST-BUS Local Timing Diagram
(16 Mb/s)
Figure 27, ST-BUS Local Data Timing
Diagram (8 Mb/s, 4 Mb/s, 2 Mb/s)
Item
Zarlink Semiconductor Inc.
MT90870
10
Item 2, Backplane Frame Pulse Setup Time
before C8i clock falling edge changed to
Backplane Frame Pulse Setup Time before C8i
clock rising edge.
Item 3, Backplane Frame Pulse Hold Time from
C8i clock falling edge changed to Backplane
Frame Pulse Hold Time from C8i clock rising
edge.
Changed C8i frame boundary active edge from
falling to rising edge.
Changed C8i frame boundary active edge from
falling to rising edge.
Changed C8i frame boundary active edge from
falling to rising edge.
Changed C8i frame boundary active edge from
falling to rising edge.
Changed FPo and C8o to FPi and C8i respectively
and shows rising C8i frame boundary active edge.
Change
Data Sheet