stlc30r81 STMicroelectronics, stlc30r81 Datasheet - Page 4

• Manufacturer Part Number: stlc30r81
• Description: Integrated Ringing Slic For Short Loop Applications
• Manufacturer: STMicroelectronics

STLC30R81
THERMAL DATA
OPERATING MODES
It is possible to choose several operating modes just setting the proper Input D0, D1, D2, and D3. The table
below (Tab.1) shows these modes:
Table 1. Ctrl Interface
Power Down
It's an idle state characterized by very low power consumption; any functionality is disabled. It can be set during
out of service periods just to reduce the power consumption.
It is worth remarking that two other conditions can set the SLIC in IDLE state but with some differences as re-
ported in the table below.
Table 2. Power down
Stand By
Mode selected in On-Hook condition when high immunity to the common mode currents is needed to prevent
false Off-Hook detection. To reduce the current consumption, AC feedback loop is disabled. Only DET and
4/17
D0
Symbol
R
R
0
0
1
0
0
0
1
1
1
1
0
0
1
1
0
1
th j-amb
th j-amb
D1
0110⇒1110
0
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
Inputs
Thermal resistance Junction to Ambient (2 layer board) Typ.
Thermal resistance Junction to Ambient (1 layer board) Typ.
D2
0
0
0
1
0
1
0
1
0
1
0
1
0
1
1
1
Power down command
Thermal alarm
IDLE STATE
D3
0
1
1
0
0
0
0
0
0
0
1
1
1
1
1
1
Reset
Power down
Power down
Power down
Stand-by
Active normal polarity
Active reverse polarity
Trapezoidal ringing normal polarity
Trapezoidal ringing reverse polarity
Ground start
High impedance feeding
Active normal polarity (On-Hook transmission)
Active reverse polarity (On-Hook transmission)
Ringing In Sinusoidal (or PWM) wave Rxin+/- In
Ringing In Sinusoidal (or PWM) wave Rg+/- In
Test mode: phone detection
Test mode: loop back
Test mode: short circuit detection
Parameter
Operating Mode
Disable
Disable
DET
Low
GDK/AL
Disable
Disable
Low
Phone detect
Phone short
Ringing trip
Ringing trip
Ringing trip
Ringing trip
Off-Hook
Off-Hook
Off-Hook
Off-Hook
Off-Hook
Off-Hook
Off-Hook
Off-Hook
Disable
Disable
Disable
DET
Value
32
56
Output
GDK/AL
Gnd-Key
Gnd-Key
Gnd-Key
Gnd-Key
Gnd-Key
Gnd-Key
Gnd-Key
Gnd-Key
Gnd-Key
Gnd-Key
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Unit
C/W
C/W