
UM_1966B_024
73M1966B Evaluation Kit User Manual
Rev. 1.0
11
3 Connectors and Jumpers
This section describes the connectors and jumpers on the 73M1966 Demo Motherboard.
Table 1: Motherboard Connectors and Jumpers
Connector
Number
Name
Function
S1
4-pin daughterboard
connector
Socket for the analog interface to the 73M1966B Demo Board.
S2
20-pin daughterboard
connector
Socket for the digital interface and power to the 73M1966B Demo
Board.
J1
VCC3.3
Banana jack for 3.3V lab supply connection. (Use either J1 and J2
or J5 but not both.) Using J1 and J2 is necessary only if testing
over a range of voltage.
J2
GND
Banana jack for ground lab supply connection. (Use either J1 and
J2 or J5 but not both.) Using J1 and J2 is necessary only if testing
over a range of voltage.
J3
To Slave
Connector to connect SPI to slave demo board.
J4
From Master
Connector to connect SPI to master demo board.
J5
+5 V Power
Input for +5 V power supply which is down regulated on the
Motherboard to 3.3 V. (Use either J5 or J1 and J2 but not both.)
J6
PCM Highway
Header connector to the PCM Highway.
J24
CLKO
BNC connector for the clock output.
J30
RJ-11 Connector
Connection to telephone network simulator.
J31, J32
PCM Highway
PCM Highway connectors for daisy chain operation. Only used to
daisy chain two or more Motherboards.
J33
Reserved
J41
Reserved
J42
SPI Connector
Connect the cable from the PC to J42 to communicate to the SPI
via the GUI. Take care to observe the orientation of the connector.
J43
CLKI
BNC connector for connecting an external PCM clock source or
sync.
J44
FS
BNC connector for providing or receiving PCM frame sync..
J45
DR
BNC connector providing receive data from a PMC source to the
demo board.
J46
DX
BNC connector providing transmit data to a PCM receiver from the
demo board.
J47
Audio
Install jumper on the AUDIO pin and the middle pin to activate the
speaker amplifier. By default, no jumper is installed and the
speaker amplifier is not activated.
J57
On-Board Oscillator
Install jumper to enable the on-board oscillator. This is not
normally used.