PSoC CY8CTMG20x and CY8CTST200 TRM, Document No. 001-53603 Rev. *C
267
USB_MISC_CR
1,BDh
21.4.9
USB_MISC_CR
USB Miscellaneous Control Register
The USB Miscellaneous Control Register controls the clocks to the USB block to make IMO work with better accuracy for the
USB part and to disable the single ended input of USBIO in the case of a non-USB part.
In the table above, note that reserved bits are grayed table cells and are not described in the bit description section below.
Reserved bits must always be written with a value of ‘0’. For additional information, refer to the
in the Digital Clocks chapter.
2
USE_SE_EN
The single ended outputs of USBIO is enabled or disabled based upon this bit setting. Set this bit to
'1' when using this part as a USB part.
0
The single ended ouputs of USBIO are disabled. The DPO, DMO is held at logic high state
and RSEO is held at a low state.
1
The single ended output of USBIO is enabled and USB transactions can occur.
Note
Bit [1:0] of the USBIO_CR1 register is also affected by this register setting. When this bit is '0'
(default) regardless of the DP and DM state, the DPO and DMO bits of USBIO_CR1 are '11b'.
1
USB_ON
This bit is used by the IMO DAC block to either work with better DNL consuming higher power, or with
sacrificed DNL consuming lower power. Set this bit to '1' when the part is used as a USB part.
0
The IMO runs with sacrificed DNL by consuming less power.
1
The IMO runs with better DNL by consuming more power.
0
USB_CLK_ON
This bit either enables or disables the clocks to the USB block. It is used to save power in cases when
the device need not respond to USB traffic. Set this bit to '1' when the device is used as a USB part.
0
All clocks to the USB block are driven as '0'. The device does not respond to USB traffic and
none of the USB registers, except IMO_TR, IMO_TR1 and USBIO_CR1, listed in the
are writable.
1
Clocks are not blocked to the USB block. The device responds to USB traffic depending
upon the other register settings mentioned in
Register Definitions on page 171
in the Full-
Speed USB chapter.
Individual Register Names and Addresses:
1,BDh
USB_MISC_CR: 1,BDh
7
6
5
4
3
2
1
0
Access : POR
RW : 0
RW : 0
RW : 0
Bit Name
USB_SE_EN
USB_ON
USB_CLK_ON
Bit
Name
Description
Содержание PSoC CY8CTMG20 Series
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Страница 182: ...182 PSoC CY8CTMG20x and CY8CTST200 TRM Document No 001 53603 Rev C Full Speed USB Feedback...
Страница 186: ...186 PSoC CY8CTMG20x and CY8CTST200 TRM Document No 001 53603 Rev C Section E Registers Feedback...
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