MT90812 Mitel Networks Corporation, MT90812 Datasheet - Page 68

• Manufacturer Part Number: MT90812
• Description: Integrated Digital Switch (IDX)
• Manufacturer: Mitel Networks Corporation

MT90812
22.17
The SSCB register is used to store the cadence information for Energy Detect Block B. Refer to the description
of the “Energy Detect B - Low Threshold Register (EDBLT)” on page 63.
22.18
The seven LTC registers are configured as follows:
22.19 High Tone Coefficient Registers 1-7 (HTC1-7)
The seven HTC registers are configured as follows:
Each of the seven programmable Tone Generators has a Low and High Tone Coefficient Register used to
program the two tone frequencies. Frequencies for the programmable tone generators can be specified
according to one of three formula’s, depending on what range the coefficient value is in, as shown in Table 14.
64
Read Address is: 016
Reset Value is: 00
Read/Write Addresses are: 20-26
Reset Value is: 00
Read/Write Addresses are: 28-2E
Reset Value is: 00
0-6
0-7
0-7
Bit
Bit
Bit
7
Supervisory Signal Cadence Register B (SSCB)
Low Tone Coefficient Registers 1-7 (LTC1-7)
H0-H7
Name
Name
Name
L0-L7
t6-t0
p
H
H
H
H
Position with respect to high and low thresholds.
1 = above high threshold. 0 = below low threshold.
Cadence of the supervisory signal ranging from 0 to 508 msec in units of 4 msec.
Low Tone Coefficient.
High Tone Coefficient.
H7
L7
7
7
7
p
H6
H
L6
6
H
6
6
t6
H5
L5
5
5
5
t5
H4
L4
4
4
t4
4
H3
L3
3
t3
3
3
H2
L2
2
2
t2
2
Description
Description
Description
H1
1
L1
1
1
t1
H0
L0
0
0
t0
0
Advance Information