mt8986al1 Zarlink Semiconductor, mt8986al1 Datasheet - Page 19

• Manufacturer Part Number: mt8986al1
• Description: Multiple Rate Digital Switch
• Manufacturer: Zarlink Semiconductor

* - only in 44 pin package
If bit two (MC) of the corresponding Connection High locations is 1, or if bit 6 of the Control Register is 1, then these entire eight bits are output on the
corresponding output 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.
Nibble Switch
BIT
7-5
4-0
Identical
2 Mb/s *
2 Mb/s *
(2 Mb/s)
2 Mb/s
4 Mb/s
4 Mb/s
8 Mb/s
Rate
I/O
CAB4-0*
SAB2-0*
NAME
Table 9 - CAB and SAB Bits Programming for Identical I/O Rate Applications
# of Input x
Streams
Output
Source Stream Address bits. These three bits are used together with SAB3 in CMH to select up
to 16 different source streams for the connection. Depending on the switching configuration and
the data rate selected in the application, 1, 2, 3 or all 4 SAB bits can be used. See Tables 9 and 10
for details.
Source Channel Address bits 0-4. These five bits are used together with CAB5-6 in CMH to
select up 128 different source channels for the connection. Depending on the switching
configuration and the data rate used in the application, 5, 6 or all 7 CAB bits can be used to select
respectively 32, 64 or 128 different channels.
See Tables 9 and 10 for details.
16x8 *
4x4 *
8x8
4x4
8x4
2x2
8x4
SAB2
7
Figure 6 - Connection Memory Low (CML) Bits
Connection Memory Low - Read/Write
SAB1
6
CAB4 to CAB0 (32 channel/inp. stream)
CAB4 to CAB0 (32 channel/inp. stream)
CAB4 to CAB0 (32 channel/inp. stream)
CAB5 to CAB0 (64 channel/inp. stream)
CAB5 to CAB0 (64 channel/inp. stream)
CAB6 to CAB0 (128 channel/inp. stream)
CAB5 to CAB0 (64 nibble/inp. stream)
CAB bits used to determine the source
SAB0
5
Zarlink Semiconductor Inc.
channel for the connection
CAB4
MT8986
(CM low bits)
4
19
CAB3
3
DESCRIPTION
CAB2
2
CAB1
1
CAB0
0
SAB2, SAB1, SAB0
SAB2, SAB1
SAB3, SAB2, SAB1, SAB0
SAB2, SAB1
SAB2, SAB1, SAB0
SAB2
SAB2, SAB1, SAB0
determine the source
SAB bits used to
stream for the
connection
Data Sheet