ST7540TR STMicroelectronics, ST7540TR Datasheet - Page 17

• Manufacturer Part Number: ST7540TR
• Description: IC TXRX FSK POWER LINE 28-TSSOP
• Manufacturer: STMicroelectronics
• Type: Transceiverr

Specifications of ST7540TR

• Number Of Drivers/receivers: 1/1
• Voltage - Supply: 5 V ~ 9 V
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• For Use With: 497-5485 - BOARD EVAL ST7540 PWR LINE TXRX
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Protocol: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 497-5528-2

ST7540
6.3
Table 8. ST7540 synthesized frequencies
frequency
Carrier
(KHz)
60
66
72
Mark and space frequencies
Mark and Space Communication Frequencies are defined by the following formula:
F ("0") = FCarrier + [∆F]/2
F ("1") = FCarrier - [∆F]/2
∆F is the Frequency Deviation.
With Deviation = “0.5” the difference in terms of frequency between the mark and space
tones is half the Baudrate value (∆F=0.5*BAudrate). When the Deviation = “1” the difference
is the Baudrate itself (∆F= Baudrate). The minimal Frequency Deviation is 600Hz.
Baud
1200
2400
4800
1200
2400
4800
1200
2400
4800
rate
600
600
600
Deviation
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
--
--
--
1
1
1
1
1
1
1
1
1
1
1
1
Exact frequency
59733
59733
59408
59408
58757
58757
57617
65755
65755
65430
65430
64779
64779
63639
71777
71777
71452
71452
70801
70801
69661
(Clock=16MHz)
“1”
[Hz]
60221
60221
60547
60547
61198
61198
62337
66243
66243
66569
66569
67220
67220
68359
72266
72266
72591
72591
73242
73242
74382
“0”
frequency
Carrier
(KHz)
82.05
110
86
Baud
1200
2400
4800
1200
2400
4800
1200
2400
4800
rate
600
600
600
Deviation
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
--
1
1
1
1
--
1
1
1
1
--
1
1
1
1
Functional description
109701
109701
109375
109375
108724
108724
107585
Exact frequency
81706
81706
81380
81380
80892
80892
79590
85775
85775
85449
85449
84798
84798
83659
(Clock=16MHz)
“1”
[Hz]
110352
110352
110677
110677
111165
111165
112467
82357
82357
82682
82682
83171
83171
84473
86263
86263
86589
86589
87240
87240
88379
“0”
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