MT8910-1 Mitel Networks Corporation, MT8910-1 Datasheet - Page 16

• Manufacturer Part Number: MT8910-1
• Description: CMOS St-bus Family Digital Subscriber Line Interface Circuit
• Manufacturer: Mitel Networks Corporation

MT8910-1
Note 1) Not Production Tested
9-18
ST-BUS Frame Access
5,4,3,
5,4,3,
2,1,0
Bit
7,6
2,1
Bit
7,6
0
SRID1, SRID0
SRID1, SRID0
24 - 33
36 - 45
48 - 57
60 - 69
72 - 81
84 - 93
12 -21
RPA4-RPA0
0 - 9
SRID1
SRID1
bit 7
bit 7
M1 - M6
Name
Name
RSV
SRID0
SRID0
bit 6
bit 6
Table 9. Maintenance Channel Bit Assignment on ST-BUS Port
Receive Pulse Amplitude bits (see Note 1).
Notes:
Reserved. Always reads 0.
Rx Maintenance Channel Bits 1 to 6. M-bits which were received at the end of the last DSL Basic
Frame. Refer to the "Maintenance Channel" section in the functional description for the
structuring of the received M-bits.
Status Register ID. Always reads 1, 0, respectively, when Status Register 3 is output.
Status Register ID. Always reads 1, 1, respectively, when Status Register 4 is output.
RPA4 - RPA0
0 0 0 0 0
0 0 0 0 1
0 0 0 1 0
0 0 0 1 1
0 0 1 0 0
0 0 1 0 1
0 0 1 1 0
0 0 1 1 1
0 1 0 0 0
0 1 0 0 1
0 1 0 1 0
0 1 0 1 1
0 1 1 0 0
0 1 1 0 1
0 1 1 1 0
0 1 1 1 1
M11
M12
M13
M14
M15
M16
M17
M18
M1
RPA4
bit 5
bit 5
Loop length can be calculated by dividing Receive Pulse Amplitude (RPA) by the typical
cable attenuation for a 2B1Q pulse.
Relative amplitude is based on RPA reading of zero line length with recommended
termination and transformer (ADC Gain = 0).
M1
Table 7. Status Register 3
Table 8. Status Register 4
RPA3
M21
M22
M23
M24
M25
M26
M27
M28
bit 4
bit 4
M2
M2
Amplitude (dB)
Relative
-31.85
-30.10
-28.65
-27.41
-25.83
-24.08
-22.63
-21.39
-19.80
-18.06
-16.61
-15.37
-13.78
-12.04
-10.59
-9.35
RPA2
bit 3
bit 3
M3
M31
M32
M33
M34
M35
M36
M37
M38
M3
Description
Description
RPA1
bit 2
bit 2
M4
RPA4 - RPA0
M41
M42
M43
M44
M45
M46
M47
M48
M4
1 0 0 0 0
1 0 0 0 1
1 0 0 1 0
1 0 0 1 1
1 0 1 0 0
1 0 1 0 1
1 0 1 1 0
1 0 1 1 1
1 1 0 0 0
1 1 0 0 1
1 1 0 1 0
1 1 0 1 1
1 1 1 0 0
1 1 1 0 1
1 1 1 1 0
1 1 1 1 1
Preliminary Information
RPA0
bit 1
bit 1
M5
CRC11
CRC1
CRC3
CRC5
CRC7
CRC9
M51
M52
M5
Amplitude (dB)
bit 0
RSV
bit 0
M6
Relative
-7.76
-6.02
-4.57
-3.33
-1.74
1.45
2.69
4.28
6.02
NA
NA
NA
NA
NA
NA
0
CRC10
CRC12
CRC2
CRC4
CRC6
CRC8
M61
M62
M6