SI3225-G-FQR Silicon Laboratories Inc, SI3225-G-FQR Datasheet - Page 85

• Manufacturer Part Number: SI3225-G-FQR
• Description: IC PROSLIC/CODEC DUAL 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r

Specifications of SI3225-G-FQR

• 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
• Package / Case: 64-TQFP, 64-VQFP
• 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

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.
3.31.1. 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 subframe are
required to pass the 16-bit voice data to the host. Each
125 µs frame can, therefore, accommodate up to eight
voice channels (the Dual ProSLIC can accommodate up
to sixteen voice channels in 8-bit GCI mode). Table 48
describes the GCI mode subframe selection for 16-bit
GCI mode.
and
FS
command
Sub-Frame
SF0
Channel
Figure 55. Time-Multiplexed GCI Highway Frame Structure
B1
8
0
communication
SF1
SF2
B2
1
8
while
SF3
125 µs = 1 Frame
the
Rev. 1.3
3.31.2. Monitor Channel
The Monitor channel is used for initialization and setup
of the Dual ProSLIC devices. It is also used for general
communication with the Dual ProSLIC by allowing read
and write access to the Dual ProSLIC devices registers.
Use of the monitor channel requires manipulation of the
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)
Table 48. Subframe Selection 16-Bit GCI Mode
M
8
2
SF4
C/I
Si3220/25 Si3200/02
SF5
SC
MR MX
3
1
SF6
1
SF7
SDI
1
1
0
0
SDO
1
0
1
0
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