MT90820AL Zarlink, MT90820AL Datasheet - Page 16

• Manufacturer Part Number: MT90820AL
• Description: Switch Fabric 2K x 2K/1K x 1K/512 x 512 131.072Mbps 5V 100-Pin MQFP Tray
• Manufacturer: Zarlink

Specifications of MT90820AL

• Package: 100MQFP
• Number Of Ports: 16
• Fabric Size: 2K x 2K|1K x 1K|512 x 512
• Switching Bandwidth: 131.072 Mbps
• Switch Core: Non-Blocking
• Port Speed: 2.048|4.096|8.192 Mbps
• Operating Supply Voltage: 5 V

10 - 0
Bit
15
0
ST-BUS Frame
Read Address:
Reset Value:
Offset Value
Offset Value
GCI Frame
FE Input
14
FE Input
0
CLK
CLK
FD10-0
Name
13
0
CFE
12
Figure 3 - Example for Frame Alignment Measurement
Table 10 - Frame Alignment (FAR) Register Bits
FD11
11
Frame Delay Bits. The binary value expressed in these bits refers to the measured
input offset value. These bits are reset to zero when the SFE bit of the IMS register
changes from 1 to 0. (FD10 = MSB, FD0 = LSB)
0
02
0000
0
H
FD10
1
,
10
1
H
.
2
2
FD9
Zarlink Semiconductor Inc.
9
3
3
MT90820
4
FD8
4
8
16
5
5
(FD[10:0] = 06
(FD11 = 0, sample at CLK low phase)
FD7
7
6
6
7
7
FD6
6
Description
H
8
8
(FD[10:0] = 09
(FD11 = 1, sample at CLK high phase)
)
FD5
9
5
9
10
10
FD4
4
H
11
11
)
12
FD3
12
3
13
13
FD2
2
14
14
15
FD1
15
1
16
Data Sheet
FD0
0