mt8980dpr1 Zarlink Semiconductor, mt8980dpr1 Datasheet - Page 7

• Manufacturer Part Number: mt8980dpr1
• Description: 256 X 256 Channels 8 Tdm Streams At 2.048 Mbps Non-blocking Digital Switch Dx
• Manufacturer: Zarlink Semiconductor

*If bit 2 of the corresponding Connection High location is 1 or if bit 6 of the Control Register is 1, then these entire 8 bits are
output on the channel and stream associated with this location. Otherwise, the bits are used as indicated to define the source of
the connection which is output on the channel and stream associated with this location.
7-5*
4-0*
BIT
BIT
2
1
0
CSTo Bit
Message
Channel
Channel
Address
Address
NAME
Output
NAME
Stream
Enable
Bits*
Bits*
When 1, the contents of the corresponding location in Connection Memory Low are output on the
location’s channel and stream. When 0, the contents of the corresponding location in Connection
Memory Low act as an address for the Data Memory and so determine the source of the
connection to the location’s channel and stream.
This bit is output on the CSTo pin one channel early. The CSTo bit for stream 0 is output first.
If the ODE pin is high and bit 6 of the Control Register is 0, then this bit enables the output driver
for the location’s channel and stream. This allows individual channels on individual streams to be
made high-impedance, allowing switching matrices to be constructed. A 1 enables the driver and a
0 disables it.
The number expressed in binary notation on these 3 bits is the number of the ST-BUS stream for
the source of the connection. Bit 7 is the most significant bit. e.g., if bit 7 is 1, bit 6 is 0 and bit 5 is
0, then the source of the connection is a channel on STi4.
The number expressed in binary notation on these 5 bits is the number of the channel which is the
source of the connection (The ST-BUS stream where the channel lies is defined by bits 7, 6 and
5.). Bit 4 is the most significant bit. e.g., if bit 4 is 1, bit 3 is 0, bit 2 is 0, bit 1 is 1 and bit 0 is 1,
then the source of the connection is channel 19.
7
7
Address
Stream
No Corresponding Memory
- These bits give 0s if read.
Figure 5 - Connection Memory High Bits
Figure 6 - Connection Memory Low Bits
Bits
6
6
5
5
Zarlink Semiconductor Inc.
MT8980D
4
4
7
3
3
DESCRIPTION
DESCRIPTION
Channel
Address
Bits
2
2
Per Channel
Control Bits
1
1
0
0
Data Sheet