SI3230PPQX-EVB Silicon Laboratories Inc, SI3230PPQX-EVB Datasheet - Page 32

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SI3230PPQX-EVB

Manufacturer Part Number
SI3230PPQX-EVB
Description
BOARD EVAL W/DISCRETE INTERFACE
Manufacturer
Silicon Laboratories Inc
Series
ProSLIC®r
Datasheet

Specifications of SI3230PPQX-EVB

Main Purpose
Interface, Analog Front End (AFE)
Utilized Ic / Part
Si3230
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Si3230
ringing state as indicated by the Linefeed Shadow
register (direct Register 64). The data then feeds into a
programmable digital low pass filter, which removes
unwanted ac signal components before threshold
detection.
The output of the low pass filter is compared to a
programmable threshold, RPTP (indirect Register 29).
The threshold comparator output feeds a programmable
debouncing filter. The output of the debouncing filter
remains in its present state unless the input remains in
the opposite state for the entire period of time
programmed by the ring trip debounce interval,
32
Ring Trip Interrupt Pending
Ring Trip Interrupt Enable
Ring Trip Detect Debounce Interval
Ring Trip Threshold
Ring Trip Filter Coefficient
Ring Trip Detect Status (monitor only)
Note: The ProSLIC uses registers that are both directly and indirectly mapped. A “direct” register is one that is mapped
LCS
directly. An “indirect” register is one that is accessed using the indirect access registers (direct registers 28 through
31).
Processor
Signal
Input
LFS
Parameter
ISP_OUT
Table 27. Associated Registers for Ring Trip Detection
Digital
NRTP
LPF
Figure 14. Ring Trip Detector
Threshold
Ring Trip
RPTP
Preliminary Rev. 0.96
+
RTDI[6:0] (direct Register 70). If the debounce interval
has been satisfied, the RTP bit of direct Register 68 will
be set to indicate that a valid ring trip has occurred. A
ring trip interrupt is generated if enabled by the RTIE bit
(direct Register 22). Table 27 lists the registers that
must be written or monitored to correctly detect a ring
trip condition.
The recommended values for RPTP, NRTP, and RTDI
vary according to the programmed ringing frequency.
Register values for various ringing frequencies are
given in Table 28.
DBIRAW
NRTP[12:0]
RPTP[5:0]
RTDI[6:0]
Register
RTIP
RTIE
RTP
Debounce
Filter
RTDI
RTP
Indirect Register 29
Indirect Register 36
Direct Register 19
Direct Register 22
Direct Register 70
Direct Register 68
Location
Interrupt
Logic
RTIE
RTIP

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