MT90870AG Zarlink, MT90870AG Datasheet - Page 65

• 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

13.10.5
Address 00C7h
Local BER Count Register contains the number of counted errors. This register is read only. The LBCR register is
configured as follows:
13.11
13.11.1
Address 00C8h
Backplane BER Start Send Register defines the output channel and the stream in which the BER sequence is
transmitted. The BBSSR register is configured as follows:
13.11.2
Address 00C9h
Backplane Transmit BER Length Register (BTXBLR) defines how many channels in each frame the BER sequence
will be transmitted. The BTXBLR register is configured as follows:
15-9
8-0
Bit
15-14
15-0
13-9
Bit
8-0
Bit
BTXBL(8:0)
Backplane Bit Error Rate (BER) Registers
Reserved
Backplane Transmit BER Length Register (BTXBLR)
Name
Backplane BER Start Send Register (BBSSR)
Local BER Count Register (LBCR)
LBC(15:0)
BBSCA(8:0)
BBSSA(4:0)
Reserved
Name
Name
Table 36 - Backplane BER Start Send Register (BBSSR) Bits
Reset
Table 37 - Backplane Transmit BER Length (BTXBLR) Bits
0
0
Reset
Table 35 - Local BER Count Register (LBCR) Bits
0
Reset
Reserved.
Backplane Transmit BER Length Bits
The binary value of these bits define the number of channels in addition to the
Start Channel allocated for the BER Transmitter. (i.e. Total Channels = Start
Channel + BTXBL value)
0
0
0
Local Bit Error Rate Count
The binary value of the bits define the Local Bit Error count.
Reserved.
Backplane BER Send Stream Address Bits
The binary value of these bits define the Backplane output stream to
transmit the BER data.
Backplane BER Send Channel Address Bits
The binary value of these bits define the Backplane output Start
Channel in which the BER data is transmitted.
Zarlink Semiconductor Inc.
MT90870
65
Description
Description
Description
Data Sheet