mc13109 Freescale Semiconductor, Inc, mc13109 Datasheet - Page 22

• Manufacturer Part Number: mc13109
• Description: Universal Cordless Telephone Subsystem
• Manufacturer: Freescale Semiconductor, Inc

Carrier Detect Threshold Programming
microprocessor if a carier signal is present on the selected
channel. The nominal value and tolerance of the carrier
detect threshold is given in the carrier detect specification
22
Th “CD Out” pin will give an indication to the
Bit #4
CD
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Bit #3
CD
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Bit #2
CD
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Figure 27. Carrier Detect Threshold Control
Bit #1
CD
MC13109
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
section of this document. If a different carrier detect threshold
value is desired, it can be set through the MPU interface as
shown in Figure 27 below.
Bit #0
CD
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
MOTOROLA ANALOG IC DEVICE DATA
Control #
CD
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
11
0
1
2
3
4
5
6
7
8
9
Carrier Detect
Threshold
– 9.0 dB
– 8.0 dB
– 6.0 dB
– 5.0 dB
– 4.0 dB
– 3.0 dB
– 2.0 dB
– 20 dB
–7.0 dB
–1.0 dB
–19 dB
–18 dB
–17 dB
–16 dB
–15 dB
–14 dB
–13 dB
–12 dB
–10 dB
–11 dB
1.0 dB
2.0 dB
3.0 dB
4.0 dB
5.0 dB
6.0 dB
7.0 dB
8.0 dB
9.0 dB
10 dB
11 dB
0 dB