μ
PD720210
6. Functions Description
R19UH0093EJ0200 Rev.2.00
Page 44 of 59
May 26, 2014
6.3.2
Clock Output Function Settings
Table 6-3 shows the clock output function settings. These settings can be changed with the ROM Writing Tool
for Windows. When the External ROM is not used, all of the settings are in default value except for the Pin
Function, depending on the pin strapping setting (Refer to section 5.1.7.
Table 6-3. Clock Output Function Settings
Configuration item
Description
Default
Setting
Pin Function
SUSPEND/NRDCLKO pin can be set to the suspend signal
function or the clock output function.
SUSPEND
Clock Output Control
This setting controls the behavior of the Clock Output.
Mode 1 : Unstoppable
When this mode is set, the Clock Output does not stop by
the timing when RESETB is asserted.
Mode 2: Controllable
When this mode is set, the Clock Output stops in suspend
state. Refer to section 6.3.3 Clock Output Control for more
detail.
Unstoppable
Output Clock Frequency
This setting controls the frequency of the Output Clock,
24MHz or 12MHz.
24MHz
Port 1
Non-Removable-Device
Type
μ
PD720210 needs to know whether the non-Removable
device is a USB3 Hub or not, to control the clock when the
Output Clock Control is “Controllable”. When the Output
Clock Control is unstoppable, this setting is not available.
USB3 Hub
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