SI3050-E-GTR Silicon Laboratories Inc, SI3050-E-GTR Datasheet - Page 43

• Manufacturer Part Number: SI3050-E-GTR
• Description: IC VOICE DAA GCI/PCM/SPI 20TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3050-E-GTR

• Function: Data Access Arrangement (DAA)
• Interface: PCM, Serial, SPI
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 8.5mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Includes: Line Voltage Monitor, Loop Current Monitor, Overload Detection, Parallel Handset Detection, Polarity Reversal Detection, TIP and
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Lead Free Status / RoHS Status: Supplier Unconfirmed, Lead free / RoHS Compliant

Figures 39 and 40 illustrate WRITE and READ operations via a 16-bit SPI controller. These operations require a
4-byte transfer arranged as two 16-bit words. The CS pin does not go high when the eighth bit of data is received,
which indicates to the SPI state machine that eight more SCLK pulses follow to complete the operation. In the case
of a WRITE operation, the last eight bits are ignored. In a read operation, the 8-bit data value is repeated so that
the data may be captured during the last half of a data transfer if required by the controller. The Si3050 autodetects
the SPI mode (16-bit or 8-bit mode).
CS B
S CLK
S DI
S DO
CONTROL
Figure 40. Read Operation via a 16-bit SPI Port
A DDRE S S
Rev. 1.11
X X X X X X X X
Data [7:0]
S am e byte repeated twice.
Si3050 + Si3011
X X X X X X X X
Data [7:0]
43