- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
64
9.2.3. Serial Communication Speed and Timing
Communication specifications and required speed vary depending on the peripheral IC. However, because the
speed is always switched to the optimum speed by a program in the CXD3172AR’s firmware, you do not need
to worry about the format or speed. (Please use the EEPROM and EVR products recommended by Sony.)
Note that these settings cannot be customized by the user.
Serial communication is performed based on each field VD, except during communication with the EEPROM.
Communication with the EEPROM takes place only when a write/read command is received. The
communication sequence and communication start timing for each field are optimally controlled by the
firmware, so you do not need to worry about them. Note that the sequence and timing cannot be customized
by the user.
Fig 9.2-1 Overview of Chip-Select Timing in SS-HQ1 System
VD
CSEVR
CSROM
Only In the case of
EEPROM access