ZL50057 ZARLINK [Zarlink Semiconductor Inc], ZL50057 Datasheet - Page 62

• Manufacturer Part Number: ZL50057
• Description: 12 K-Channel Digital Switch with High Jitter Tolerance, Per Stream Rate Conversion (2, 4, 8, 16, or 32 Mbps), and 48 Inputs and 48 Outputs
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

12:8
12:9
Bit
7:0
Bit
15
14
13
15
14
13
BCAB[7:0]
BSAB[4:0]
BSAB[3:0]
Name
BSRC
Name
BSRC
BMM
BMM
BE
BE
Table 18 - BCM Bits for Non-32Mbps Source-to-Backplane Switching
Table 19 - BCM Bits for 32 Mbps Source-to-Backplane Switching
Backplane Source Control Bit
When LOW, the source is from the Local input port (Local Data Memory).
When HIGH, the source is from the Backplane input port (Backplane Data Memory).
Ignored when BMM is set HIGH.
Backplane Message Mode Bit
When LOW, the channel is in Connection Mode (data to be output on channel originated in
Backplane or Local Data Memory).
When HIGH, the channel is in Message Mode (data to be output on channel originated in
Backplane Connection Memory).
Backplane Output Enable Bit
When LOW, the channel may be high impedance, either at the device output, or set by an
external buffer dependent upon the BORS pin.
When HIGH, the channel is active.
Source Stream Address Bits
The binary value of these 5 bits represents the input stream number.
Ignored when BMM is set HIGH.
Source Channel Address Bits / Message Mode Data
The binary value of these 8 bits represents the input channel number when BMM is set
LOW.
Transmitted as data when BMM is set HIGH.
Note: When BMM is set HIGH, in both ST-BUS and GCI-Bus modes, the BCAB[7:0] bits
are output sequentially to the timeslot with BCAB[7] being output first.
Backplane Source Control Bit
When LOW, the source is from the Local input port (Local Data Memory).
When HIGH, the source is from the Backplane input port (Backplane Data Memory).
Ignored when BMM is set HIGH.
Backplane Message Mode Bit
When LOW, the channel is in Connection Mode (data to be output on channel originated in
Backplane or Local Data Memory).
When HIGH, the channel is in Message Mode (data to be output on channel originated in
Backplane Connection Memory).
Backplane Output Enable Bit
When LOW, the channel may be high impedance, either at the device output, or set by an
external buffer dependent upon the BORS pin.
When HIGH, the channel is active.
Source Stream Address Bits
The binary value of these 4 bits represents the input stream number.
Ignored when BMM is set HIGH.
Zarlink Semiconductor Inc.
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Description
Description
Data Sheet