SI3210M-KT Silicon Laboratories Inc, SI3210M-KT Datasheet - Page 48
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SI3210M-KT
Manufacturer Part Number
SI3210M-KT
Description
IC SLIC/CODEC PROG 1CH 38TSSOP
Manufacturer
Silicon Laboratories Inc
Series
ProSLIC®r
Type
ProSLIC Programmable CMOS SLICr
Specifications of SI3210M-KT
Package / Case
*
Function
Subscriber Line Interface Concept (SLIC), CODEC
Interface
PCM, SPI
Number Of Circuits
1
Voltage - Supply
3.3V, 5V
Current - Supply
88mA
Power (watts)
700mW
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Includes
BORSCHT Functions, DTMF Generation and Decoding, FSK Generation, Pulse Metering Generation, Voice Loopback Test Modes
Product
Telecom
Supply Voltage (min)
3.13 V
Supply Current
4 mA
Maximum Operating Temperature
+ 100 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Number Of Channels
1
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI3210M-KT
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Si3210/Si3211
2.7. Audio Path
Unlike traditional SLICs, the codec function is integrated
into the ProSLIC. The 16-bit codec offers programmable
gain/attenuation blocks and several loopback modes.
The signal path block diagram is shown in Figure 25.
2.7.1. Transmit Path
In the transmit path, the analog signal fed by the
external ac coupling capacitors is amplified by the
analog transmit amplifier, ATX, prior to the A/D
converter. The gain of the ATX is user-selectable to one
of mute/–3.5/0/3.5 dB options. The main role of ATX is
to coarsely adjust the signal swing to be as close as
possible to the full-scale input of the A/D converter in
order to maximize the signal-to-noise ratio of the
transmit path. After passing through an anti-aliasing
filter, the analog signal is processed by the A/D
converter, producing an 8 kHz, 16-bit wide, linear PCM
data stream. The standard requirements for transmit
path attenuation for signals above 3.4 kHz are
implemented as part of the combined decimation filter
characteristic of the A/D converter. One more digital
filter is available in the transmit path: THPF. THPF
implements the high-pass attenuation requirements for
signals below 65 Hz. The linear PCM data stream
output from THPF is amplified by the transmit-path
programmable gain amplifier, ADCG, which can be
programmed from –
dB to 6 dB. The DTMF decoder
can receive the linear PCM data stream at this point to
perform the digit extraction when enabled by the user.
The final step in transmit path signal processing is the
user-selectable A-law or µ-law compression, which can
reduce the data stream word width to 8 bits. Depending
on the PCM_Mode register selection, every 8-bit
compressed serial data word will occupy one time slot
on the PCM highway, or every 16-bit uncompressed
serial data word will occupy two time slots on the PCM
highway.
48
Rev. 1.45