Serial Communication Prohibited Period; Important Note Regarding Communication; When Communication Is Not Used - Sony SS-HQ1 Application Notes

9.1.5. Serial Communication Prohibited Period

A serial communication prohibited period is set during the time period preceding and following the VD fall.
Communication from the exterior is not accepted during the periods shown in the diagram below.
Communication prohibited period
VD

9.1.6. Important Note Regarding Communication

The serial communication clock is made by frequency-dividing the CXD3172AR's encoder clock (ECK).
Therefore, communication may not work properly in cases where MODESEL is not set correctly, or when the
ECK frequency shifts significantly from the recommended value.

9.1.7. When Communication is Not Used

In order to prevent operation errors in cases where the serial interface is not being used, set the pins as shown
in Table 9.1-5.
Table 9.1-5 Pin Settings When Communication is Not Used
0.3ms
2H
Fig 9.1-4 Serial Communication Prohibited Period
Pin name
XCS
SCK
SIFSEL
SI
SO
Communication prohibited period
0.3ms
Pin No State
15 H
18 H
13 L
16 H or L
17 Open
62
- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
2H