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MH88612K Datasheet(PDF) 2 Page - Mitel Networks Corporation |
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MH88612K Datasheet(HTML) 2 Page - Mitel Networks Corporation |
2 / 8 page 2-122 MH88612K Preliminary Information Figure 2 - Pin Connections Pin Description Pin # Name Description 1TF Tip Feed. Connects to external diode for protection. Internally connected to pin 21. 2RF Ring Feed (Input). is normally connected to ring relay for negative battery feed voltage and ringing voltage input. 3 IC/NC No Connections to be made to this pin, used for internal connection. 4 IC/NC No Connections to be made to this pin, used for internal connection. 5 IC/NC No Connections to be made to this pin, used for internal connection. 6 IC/NC No Connections to be made to this pin, used for internal connection. 7 IC/NC No Connections to be made to this pin, used for internal connection. 8 TIP Connects to the “Tip” lead of the telephone line. 9 IC/NC No Connections to be made to this pin, used for internal connection. 10 RING Connects to the “Ring” lead of the telephone line. 11 RC2 Relay Control 2 (Input). Active high to reverse Tip/Ring. 12 LPGND Loop Ground is the system ground reference with respect to VBat. Normally tied with GNDA. 13 IC/NC No Connections to be made to this pin, used for internal connection. 14 VR Voice Receive (Input) is the 4-wire analog signal to the SLIC. 15 VRef Voltage Reference (Input). to set the constant current feed to the subscriber line. Constant current feed can be adjusted by the input voltage on the VRef. This pin can also be grounded for normal 25mA loop current. 16 CAP Connects external capacitor to ground for ring trip. 17 SHK Switch Hook Detect (Output). Active high 18 GNDA Analog Ground (0V) 19 VEE Negative Power Supply Voltage (-5V). 20 VDD Positive Power Supply Voltage (+5V). 21 TF Tip Feed. Connect an external diode for protection. Internally connected to pin 1. 22 VBat Negative Battery Feed Supply Voltage (-48V). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 TF RF IC IC IC IC IC TIP IC RING RC2 LPGND IC VR VRef CAP SHK GNDA VEE VDD 20 21 22 23 24 25 26 27 28 29 30 TF VBat RV PD VX IC IC VRLY RC1 RD1 |
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