SI3225-BQ Silicon Laboratories Inc, SI3225-BQ Datasheet - Page 84
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SI3225-BQ
Manufacturer Part Number
SI3225-BQ
Description
IC SLIC/CODEC DUAL-CH 64TQFP
Manufacturer
Silicon Laboratories Inc
Series
ProSLIC®r
Specifications of SI3225-BQ
Package / Case
*
Function
Subscriber Line Interface Concept (SLIC), CODEC
Interface
GCI, PCM, SPI
Number Of Circuits
2
Voltage - Supply
3.3V, 5V
Current - Supply
65mA
Power (watts)
941mW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Includes
Battery Switching, BORSCHT Functions, DTMF Generation and Decoding, FSK Tone Generation, Modem and Fax Tone Detection
Product
SLIC
Supply Voltage (min)
3.13 V
Supply Current
22 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Number Of Channels
2
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI3225-BQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Si3220/Si3225
cycles. If the Dual ProSLIC continues to automatically
transition to the OPEN state, the power alarm threshold
might be set incorrectly. If this problem persists after the
power alarm settings are verified, a system fault is
Upstream (Transmit) SC Channel Byte
The upstream SC channel byte looks similar to the
downstream SC channel byte, except that the
information quickly transfers the most time-critical
information from the Dual ProSLIC to the GCI bus. Each
upstream SC channel byte transfer from the Dual
ProSLIC lasts for at least two consecutive frames to
represent a valid transfer. The upstream C/I bits are
defined as follows:
The interrupt information for channels A and B is a
single bit that indicates that one or more interrupts might
exist on the respective channel. Each of the individual
interrupt flags (see registers 18–20) can be individually
masked by writing the appropriate bit in registers 21–23
84
Initiating Action
Loop closure detected On-hook active → off-hook active,
Ring trip detected
Ringing burst
cadence
Power alarm detected Any state → open
C/I Bit
CI2A
CI1A
CI0A
CI2B
CI1B
CI0B
Hook status information on channel A
Hook status information on channel B
Ground key information on channel A
Ground key information on channel B
Interrupt information on channel A
Interrupt information on channel B
Information Provided
Table 46. Monitored Data via Upstream SC Channel C/I Bits
Automatic Linefeed State
Transition
Off-hook active → on-hook active
Ringing → off-hook active
Ringing → on-hook transmission
On-hook transmission → ringing
Table 45. Automatic Linefeed State Transitions
Preliminary Rev. 0.91
probable and the user should take measures to
diagnose the problem.
to ignore specific interrupts. When using the GCI mode,
the user should verify that each of the desired interrupt
bits are set so the upstream SC channel byte includes
the required interrupt functions.
CI2A = 0: No interrupt on channel A
CI0A = 0: No longitudinal current detected
CI2A = 0: No interrupt on channel B
CI0A = 0: No longitudinal current detected
CI2A, CI1A, CI0A
CI2B, CI1B, CI0B
MR, MX
Context
CI2A = 1: Interrupt present on channel A
CI1A = 0: Channel A is on-hook
CI1A = 1: Channel A is off-hook
CI0A = 1: Longitudinal current detected in ch A
CI2A = 1: Interrupt present on channel B
CI1A = 0: Channel B is on-hook
CI1A = 1: Channel B is off-hook
CI0A = 1: Longitudinal current detected in ch B
Detection/Control Bits
PQ1DL (RAM 50)
LCR (Register 9)
RTP (Register 9)
(Register 23)
T1EN, T2EN
Monitors status data for channel A
Monitors status data for channel B
Monitor channel handshake bits
(see Monitor Channel section)
Interrupt Enable/Status
Bits
RINGT1E, RINGT2E,
RINGT1S, RINGT2S
RTRIPE, RTRIPS
(Registers 17/20)
LOOPE, LOOPS
(Register 16/19)
(Register 16/19)
(Register 15/18)
PQ1E, PQ1S