SI3220-GQ Silicon Laboratories Inc, SI3220-GQ Datasheet - Page 80

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

Specifications of SI3220-GQ

• 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
• Package / Case: *
• Includes: Battery Switching, BORSCHT Functions, DTMF Generation and Decoding, FSK Tone Generation, Modem and Fax Tone Detection
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si3220/Si3225
handshaking bits, MR and MX. The C/I bits indicate
status
handshaking bits Monitor Receive, MR, and Monitor
Transmit, MX, exchange data in the Monitor channel.
Figure 55 illustrates the contents of a GCI highway
frame.
16-Bit GCI Mode
In addition to the standard 8-bit GCI mode, the Dual
ProSLIC devices also offer a 16-bit GCI mode for
passing 16-bit voice data to the upstream host
processor. This mode can be used for testing purposes
or for passing non-companded voice data to an
upstream DSP for further processing.
In 16-bit GCI mode, both of the 8-bit voice data
channels (B1 and B2 in Figure 56) of each sub-frame
are required to pass the 16-bit voice data to the host.
Each 125 µ s frame can, therefore, accommodate up to
eight
80
voice
and
FS
command
channels
Sub-Frame
SF0
Channel
Figure 55. Time-Multiplexed GCI Highway Frame Structure
B1
8
0
(the
communication
SF1
Dual
ProSLIC
SF2
B2
1
8
while
SF3
can
125 µs = 1 Frame
the
Rev. 1.0
accommodate up to sixteen voice channels in 8-bit GCI
mode). Table 46 describes the GCI mode sub-frame
selection for 16-bit GCI mode.
Table 46. Sub-Frame Selection 16-Bit GCI Mode
GCI Subframe 0 Selected
(Voice channels 0–1)
GCI Subframe 1 Selected
(Voice channels 2–3)
GCI Subframe 2 Selected
(Voice channels 4–5)
GCI Subframe 3 Selected
(Voice channels 6–7)
M
8
2
SF4
C/I
SF5
SC
MR MX
3
1
SF6
1
SF7
SDI
1
1
0
0
SDO
1
0
1
0