SI3050-E-GTR Silicon Laboratories Inc, SI3050-E-GTR Datasheet - Page 45

• 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

Figure 41 illustrates the Monitor channel communication protocol. For successful communication with the Si3050,
the transmitter should anticipate the falling edge of the receiver’s acknowledgement. This also maximizes
communication speed. Because of the handshaking protocol required for successful communication, the data
transfer rate using the Monitor channel is less than 8 kbytes/second.
FSYNC
Transm itter
Receiver
MX
MX
MR
MR
Sub-Frame
SF0
Channel
Figure 41. Time-Multiplexed GCI Highway Frame Structure
B1
8
0
SF1
1st Byte
Figure 42. Monitor Handshake Timing
1st Byte
ACK
SF2
B2
8
1
125
SF3
2nd Byte

Rev. 1.11
s
125 s
M
2nd Byte
8
2
SF4
ACK
3rd Byte
SF5
SC Channel
C/I
6
Si3050 + Si3011
3rd Byte
ACK
MR MX
1
SF6
1
SF7
45