SI3220-FQ Silicon Laboratories Inc, SI3220-FQ Datasheet - Page 71

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

Specifications of SI3220-FQ

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

In Figure 42, the CID field is zero. As this field is
decremented (in LSB to MSB order), the value
decrements for each SDI down the line. The BRDCST,
R/W, and REG/RAM bits remain unchanged as the
control word passes through the entire chain. The odd
SDIs are internal to the device and represent the SDI to
SDI_THRU connection between channels of the same
Figures 43 and 44 illustrate WRITE and READ
operations to register addresses via an 8-bit SPI
controller. These operations are performed as a 3-byte
transfer. CS is asserted between each byte, which is
required for CS to be asserted before the first falling
SDI0
SDI1 (Internal)
SDI2
SDI3 (Internal)
SDI 14
SDI15 (Internal)
SDI0-15
CS
SCLK
SDI
SDO
Figure 42. Sample SPI Control Word to Address Channel 0
Figure 43. Register Write Operation via an 8-Bit SPI Port
CONTROL
BRDCST
0
0
0
0
0
0
1
R/W
A
A
A
A
A
A
A
REG/RAM
SPI Control Word
B
B
B
B
B
B
B
ADDRESS
Rev. 1.0
Reserved
device. A unique CID is presented to each channel, and
the channel receiving a CID value of zero is the target of
the operation (channel 0 in this case). The last line of
Figure 42 illustrates that in Broadcast mode, all bits
pass through the chain without permutation.
edge of SCLK after the DATA byte to indicate to the
state machine that one byte
The state of SDI is a “don’t care” during the DATA byte
of a read operation.
C
C
C
C
C
C
C
CID[0]
D
0
1
0
1
0
1
CID[1]
DATA [7:0]
0
1
1
0
1
0
E
Si3220/Si3225
only
CID[2]
0
1
1
1
0
0
F
should be transferred.
CID[3]
Hi-Z
G
0
1
1
1
0
0
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