73M1903C-EVM Maxim Integrated Products, 73M1903C-EVM Datasheet - Page 15

• Manufacturer Part Number: 73M1903C-EVM
• Description: BOARD DEMO 73M1903C WORLDWIDE
• Manufacturer: Maxim Integrated Products

Specifications of 73M1903C-EVM

• Main Purpose: Interface, Analog Front End (AFE)
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Embedded: -

UM_1903C_030
Rev. 2.0
PCB Reference
Schematic and
J4
J5
Name
Ring
Detector
Output
Off-hook
Control
Description
Software volume control by the 73M1903C GPIO:
Three-pin header that selects the Ring Detector output to connect to
either GPIO4 of the 73M1903C or to a Host CPU GPIO through JS1 or
JP25.
Three-pin header that selects the Off-hook control by either
73M1903C GPIO5 or by a Host CPU GPIO through JS1 or JP25.
1-2: Ring Detector output is fed to 73M1903C GPIO4 (GPIO4 must
2-3: Ring detector output is directed to a host controller through
1-2: Off-hook is controlled by 73M1903C GPIO5 (GPIO5 must be
2-3: Off-hook is controlled by a host output through either JS1 or
The 73M1903C GPIO 0, 1 and 2 must be configured as output).
J1(2-3), J2(2-3), J3(2-3)
GPIO2
be configured as an input).
either JS1 or JP25.
configured as an output).
JP25.
High
High
High
High
Low
don’t care
GPIO1
High
High
Low
Low
73M1903C Evaluation Board User Manual
don’t care
GPIO0
High
High
Low
Low
Volume Control
Shutdown (MUTE)
6 db Amp gain
12 db Amp gain
18 db Amp gain
23.4 db Amp gain
15