(2)に関して、
p.83 6.2.2.9項に詳細の記載がございます。
The 16-MHz crystal is not required for operation of the TPS659037 device. The OSC16M_CFG OTP bit
can be set to disable the 16MHz crystal completely, and enable one of the following two alternative
options for system clock generation:
~
Please note that if the OSC16M_CFG OTP bit is set to 0, a 16-MHz crystal must be present for the proper
operation of the device.