SI3220-KQ Silicon Laboratories Inc, SI3220-KQ Datasheet - Page 84

• Manufacturer Part Number: SI3220-KQ
• Description: IC SLIC/CODEC DUAL-CH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r

Specifications of SI3220-KQ

• 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: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Includes: Battery Switching, BORSCHT Functions, DTMF Generation and Decoding, FSK Tone Generation, Modem and Fax Tone Detection
• Product: Telecom
• Supply Voltage (min): 3.13 V
• Supply Current: 22 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Number Of Channels: 2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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