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Cypress Semiconductor /psoc63 /USBFS0 /USBLPM /LPM_CTL

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Interpret as LPM_CTL

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31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (LPM_EN)LPM_EN 0 (LPM_ACK_RESP)LPM_ACK_RESP 0 (NYET_EN)NYET_EN 0 (SUB_RESP)SUB_RESP

Description

LPM Control Register

Fields

LPM_EN

LPM enable 0: Disabled, LPM token will not get a response (backward compatibility mode) 1: Enable, LPM token will get a handshake response (ACK, STALL, NYET or NAK) A STALL will be sent if the bLinkState is not 0001b A NYET, NAK or ACK response will be sent depending on the NYET_EN and LPM_ACK_RESP bits below
LPM_ACK_RESP

LPM ACK response enable (if LPM_EN=1), to allow firmware to refuse a low power request 0: a LPM token will get a NYET or NAK (depending on NYET_EN bit below) response and the device will NOT go to a low power mode 1: a LPM token will get an ACK response and the device will go to the requested low power mode
NYET_EN

Allow firmware to choose which response to use for an LPM token (LPM_EN=1) when the device is NOT ready to go to the requested low power mode (LPM_ACK_RESP=0). 0: a LPM token will get an NAK response (indicating a CRC error), the host is expected to repeat the LPM token. 1: a LPM token will get a NYET response
SUB_RESP

Enable a STALL response for all undefined SubPIDs, i.e. other than LPM (0011b). If not enabled then there will be no response (Error) for the undefined SubPIDs.

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Register License

Copyright 2016-2018 Cypress Semiconductor Corporation \n Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License.
You may obtain a copy of the License at \n
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and
limitations under the License.

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Register Reference

https://github.com/cmsis-svd/cmsis-svd-data