SI3220-KQ Silicon Laboratories Inc, SI3220-KQ Datasheet - Page 66

• 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
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 edge of SCLK after the DATA byte to indicate to the state machine that one byte
should be transferred. The state of SDI is a “don’t care” during the DATA byte of a read operation.
66
CS
SCLK
SDI
SDO
CS
SCLK
SDI
SDO
CS
SCLK
SDI
SDO
CS
SCLK
SDI
SDO
CONTROL
Figure 43. Register Write Operation via an 8-Bit SPI Port
Figure 44. Register Read Operation via an 8-Bit SPI Port
Figure 45. Register Write Operation via a 16-Bit SPI Port
Figure 46. Register Read Operation via a 16-Bit SPI Port
CONTROL
CONTROL
CONTROL
ADDRESS
ADDRESS
Preliminary Rev. 0.91
ADDRESS
ADDRESS
Data [7:0]
X X X X X X X X
Data [7:0]
Same byte repeated twice.
DATA [7:0]
X X X X X X X X
X X X X X X X X
Data [7:0]
X X X X X X X X
Data [7:0]
Hi-Z
Hi - Z
only