ST7538PTR STMicroelectronics, ST7538PTR Datasheet - Page 22

• Manufacturer Part Number: ST7538PTR
• Manufacturer: STMicroelectronics

Specifications of ST7538PTR

• Main Category: Single Chip
• Power Supply Type: Analog/Digital
• Operating Supply Voltage (typ): 5/9/12V
• Operating Supply Voltage (min): 4.75/7.5V
• Operating Supply Voltage (max): 5.25/12.5V
• Supply Current: 5/370mA
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Pin Count: 44
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Table 11. Control Register Functions (continued)
ST7538
22/30
12 to 13
15 to 16
17 to 20
14
21
22
23
Output Clock
Interfacing
Input Filter
Sensitivity
Reserved
Function
Detection
Not Used
Method
Mains
Mode
Mode
Carrier detection
without conditioning
Carrier detection
with conditioning
Preamble detection
without conditioning
Preamble detection
with conditioning
Normal Sensitivity
High Sensitivity
Asynchronous
Synchronous
Not Used
Disabled
Enabled
16 MHz
8 MHz
4 MHz
Value
Bit 16
0
0
1
1
0
0
1
1
Selection
Bit 14
Bit 22
Bit 23
0
1
0
1
0
1
Bit 15
0
1
0
1
0
1
0
1
Carrier Detection
Notification on CD_PD Line
CLR/T and RxD signal
always Present
CLR/T and RxD lines are
forced to “0” when Carrier
is not detected
Preamble Detection
Notification on CD_PD Line
CLR/T and RxD signal
always Present
Preamble Detection
Notification on CD_PD Line
CLR/T and RxD lines are
forced to “0” when
Preamble has not been
detected or PLL is in
Unlock condition
Do not modify the default
value
Note
Asynchronous
conditioning
Preamble
detection
Disabled
Default
Normal
without
4 MHz
1001
0