CHAPTER 2-2: Clock Gating
102 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
[bit25:24] CECCK[1:0]: Settings for operation clock supply and gating of
HDMI-CEC/Remote Control Reception
These bits control the operation clock supply and gating to HDMI-CEC/Remote Control Reception. The
correspondence between each bit and the HDMI-CEC/Remote Control Reception channel is shown
below.
bit24 - CECCK0: HDMI-CEC/Remote Control Reception channel 0
bit25 - CECCK1: HDMI-CEC/Remote Control Reception channel 1
When the relevant bit is set to 1, the bus clock is supplied to the corresponding HDMI-CEC/Remote
Control Reception channel to use the HDMI-CEC/Remote Control Reception function. For products to
which the relevant HDMI-CEC/Remote Control Reception channel is not mounted, it is prohibited to
change the relevant bit from the initial value.
When the relevant bit is set to 0, the bus clock input to the corresponding HDMI-CEC/Remote Control
Reception channel is gated. While the bus clock input is gated, the HDMI-CEC/Remote Control
Reception function of the corresponding channel cannot be used
Supplies the bus clock to the HDMI-CEC/Remote Control Reception channel corresponding to the
relevant bit. (Initial value)
[bit23:21] Reserved: Reserved bits
Write 0 to these bits.
[bit20] PCRCCK: Settings for operation clock supply and gating to Programmable-CRC
This bit controls the operation clock supply and gating to the Programmable-CRC function. When this bit
is set to 1, the bus clock is supplied to the Programmable-CRC unit to use the Programmable-CRC
function. For products to which the relevant Programmable-CRC unit is not mounted, do not change the
relevant bit from the initial value.
When this bit is set to 0, the bus clock input to the Programmable-CRC unit is gated. While the bus clock
input is gated, the functions of the Programmable-CRC cannot be used.
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