Cirrus Logic CS61583 - Manual (Page 38)

4. Closing a DIP switch on SW2, SW3, and
SW4 towards the label sets the CS61583 control
pin of the same name to logic 1.
5. When performing a manual loopback of the
recovered signal to the transmit signal at the
BNC connectors, the recovered data must be
valid on the falling edge of RCLK to properly
latch the data in the transmit direction. To
accomplish this, the SW2 switch position labeled
"CLKE" must be closed (logic 1).
6. Jumpers can be placed on headers J9 and J12
to provide a ground reference on TRING for
75
Ω
coax E1 applications.
7. Properly terminate TTIP/TRING when
evaluating the transmit output pulse shape. For
more information concerning pulse shape
evaluation, refer to the Crystal application note
entitled "Measurement and Evaluation of Pulse
Shapes in T1/E1 Transmission Systems."
CDB61583
38 DB172PP1