Si3056
Si3018/19/10
Table 24. Si3056 Pin Descriptions (Continued)
Pin #
Pin Name
Description
11
AOUT/INT
Analog Speaker Out/Interrupt.
Provides an analog output signal for driving a call progress speaker or a hardware
interrupt for multiple sources of interrupts.
12
13
14
GND
Ground.
Connects to the system digital ground.
V
Analog Supply Voltage.
Provides the analog supply voltage for the Si3056.
A
M0
Mode Select 0.
The first of two mode select pins that selects the operation of the serial port/DSP inter-
face.
15
16
RGDT/FSD/M1
Ring Detect/Delayed Frame Sync/Mode Select 1.
Output signal that indicates the status of a ring signal. Produces an active low rectified
version of the ring signal. When daisy chain is enabled, this signal becomes a delayed
frame sync to drive a slave device. It is also the second of two mode select pins that
selects the operation of the serial port/DSP interface when RESET is deasserted.
OFHK
Off-Hook.
An active low input control signal that provides a termination across TIP and RING for
line seizing and pulse dialing,
Rev. 1.05
85
SILICON [ SILICON ]
