IDT821621 Просмотр технического описания (PDF) - Integrated Device Technology

Номер в каталоге

Компоненты Описание

производитель

IDT821621

LONG HAUL SLIC

Integrated Device Technology 

IDT821621

PIN DESCRIPTION

LONG HAUL SLIC

Table 1 — Pin Description

Pin Name

AGND

BGND

VBAT

VBREF

VCC

A (TIP)

B (RING)

HPA

HPB

DA

DB

RSN

VTX

C1

C2

D1

D2

D3

RYOUT1

RYOUT2

RYOUT3

RINGOUT

DET

RD

RDC

CAS

TMG

NC

Type

Ground

Ground

Battery

−

Power

I/O

I/O

Capacitor

Capacitor

Input

Input

Input

Output

Inputs

Inputs

Output

Output

Output

Output

Output

−

−

Capacitor

−

−

PLCC

Pin No.

21

1

8

23

2

31

32

26

27

29

30

22

24

16

15

10

9

14

4

5

6

3

13

28

20

17

7

11, 12, 18, 19, 25

Description

Analog ground.

Battery ground.

Battery supply and connection to substrate.

Battery reference pin. It should be connected to VBAT.

+3.3 V / +5 V compatible power supply.

Connection to the Tip wire of the subscriber loop.

Connection to the Ring wire of the subscriber loop.

A (TIP) side of high-pass filter capacitor.

B (RING) side of high-pass filter capacitor.

Negative input to ring-trip comparator.

Positive input to ring-trip comparator.

Receive summing node.

Transmit output.

SLIC state control. TTL compatible. C2 is MSB and C1 is LSB. Refer to Table 2 for details.

Relay driver control. TTL compatible.

D1, D2 and D3 control the relay drivers RYOUT1, RYOUT2 and RYOUT3 respectively. Logic low on D1

activates the RYOUT1 relay driver. Logic low on D2 activates the RYOUT2 relay driver. Logic low on D3

activates the RYOUT3 relay driver.

Relay/switch driver. Open-collector driver with emitter internally connected to BGND.

Relay/switch driver. Open-collector driver with emitter internally connected to BGND.

Relay/switch driver. Open-collector driver with emitter internally connected to BGND.

Ringing relay driver. Open-collector driver with emitter internally connected to BGND.

Detector output. Open-collector with a built-in 15 kΩ pull-up resistor.

This output provides on-hook/off-hook status of the loop based on the selected operating state. Refer to

Table 2 for details. The detected output will either be hook switch or ring-trip. Logic low indicates that a hook

switch event or ring-trip event has been detected.

Detect resistor. An external resistor connected to this pin is used to set the loop-detect threshold.

DC feed resistor. The DC feed current is programmed by a network connected between this pin and RSN.

Anti-saturation capacitor. An external capacitor is connected to this pin to filter battery voltage when

operating in anti-saturation region.

Thermal management. An external resistor is connected between this pin and VBAT to offload power from

SLIC.

No Connect.

Pin Description

6

October 8, 2003

Share Link: