MT90826AL1 Zarlink Semiconductor, Inc., MT90826AL1 Datasheet - Page 34

• Manufacturer Part Number: MT90826AL1
• Description: Quad Digital Switch
• Manufacturer: Zarlink Semiconductor, Inc.

15-14
13
12-8
7-0
Note 1:
Note 2:
16 Mbps & 8 Mbps
4 Mbps & 8 Mbps
2 Mbps & 4 Mbps
Bit
Data Rate
TM1
15
16 Mbps
8 Mbps
4 Mbps
2 Mbps
The Variable delay is only available for odd number output streams but not for the even number output streams. Avoid
programming the TM0 and TM1 bits to zero in the connection memory when the destination output streams are STo0, 2, 4,
... , 28 and 30.
The constant delay mode is available for all output streams.
TM0
14
TM1-0
OE
SAB4-0
CAB7-0
Table 15 - SAB and CAB Bits Programming for Various Interface Mode
OE
Name
13
SAB4 to SAB0 Bits Used to Determine
SAB
the Source Stream of the connection
12
4
SAB4 to SAB0 (STi0 to STi31)
SAB3 to SAB0 (STi0 to STi15)
SAB4 to SAB0 (STi0 to STi31)
SAB4 to SAB0 (STi0 to STi19)
SAB4 to SAB0 (STi0 to STi31)
SAB4 to SAB0 (STi0 to STi31)
SAB4 to SAB0 (STi0 to STi31)
SAB
11
3
Mode Select Bits.
Output Enable. This bit enables the drivers of STo pins on a per-channel
basis. When 1, the STo output driver functions normally. When 0, the STo
output driver is in a high-impedance state.
Source Stream Address Bits. The binary value is the number of the data
stream for the source of the connection.
Source Channel Address Bits. The binary value is the number of the channel
for the source of the connection. When the message mode is enabled, these
entire 8 bits are output on the output channel and stream associated with this
location.
TM1 TM0
0
1
0
1
Table 14 - Connection Memory Bits
SAB
10
2
0
0
1
1
SAB
Zarlink Semiconductor Inc.
9
1
Message mode; the contents of the connection memory are
Bit Error Test mode; the pseudo random test pattern will be
output on the corresponding output channel and stream. Only
the lower byte (bit 7 - bit 0) will be output to the ST-BUS output
output on the output channel and stream associated with this
Variable Throughput Delay mode (Note 1)
Constant Throughput Delay mode (Note 2)
location.
pins.
MT90826
SAB
8
0
34
Mode Selection
CAB
7
7
CAB
6
6
Description
CAB7 to CAB0 (128 or 256 channel/frame)
CAB Bits Used to Determine the Source
CAB6 to CAB0 (64 or 128 channel/frame)
CAB5 to CAB0 (32 or 64 channel/frame)
CAB
5
5
CAB6 to CAB0 (128 channel/frame)
CAB7 to CAB0 (256 channel/frame)
CAB5 to CAB0 (64 channel/frame)
CAB4 to CAB0 (32 channel/frame)
Channel of the Connection
CAB
4
4
CAB
3
3
CAB
2
2
CAB
1
1
Data Sheet
CAB
0
0