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UPD360 데이터시트(PDF) 199 Page - Microchip Technology

부품명 UPD360
상세설명  Highly Integrated Small Form Factor USB Type-C??Power Delivery 2.0 Port Controller
PDF  221 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

UPD360 데이터시트(HTML) 199 Page - Microchip Technology

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 2016-2017 Microchip Technology Inc.
DS00002084C-page 199
UPD360
14.4.3
HPD INTERRUPT ENABLE REGISTER (HPD_INT_EN)
14.4.4
HPD EVENT QUEUE REGISTER (HPD_QUEUE)
This register implements a circular queue that records HPD events detected by the device.
As an event is detected, it is written into the next HPD Event status field that is available and initially starts at HPD Event
0 out of reset.
After this register is read, any entries with a valid HPD event field are cleared when software writes 01b into the respec-
tive locations. The device will keep track of the last valid entry and store the next received event into the next entry. For
example, if entries 0 and 1 are valid, the device will always place the next event into location 2, regardless of whether
or not entries 0 and 1 have been cleared by software.
The device will only add entries to empty fields. After writing to HPD Event 3, the device will write the next event into
HPD Event 0, if available.
Each field is encoded as follows.
• 00b: HPD event field is empty
• 01b: HPD_HIGH Detected
• 10b: HPD_LOW Detected
• 11b: HPD_IRQ Detected
When HPD Enable is set to 0b and/or HPD Configuration is set to 1b, this register will always read 00h.
After four HPD events are recorded, any future HPD events shall be ignored until HPD event locations are freed up by
software.
Address:
0C02h
Size:
8 bits
BITS
DESCRIPTION
TYPE
DEFAULT
7:4
RESERVED
RO
0h
3:0
HPD Interrupt Enable
When “0”, prevents generation of the respective interrupt.
R/W
0h
Address:
0C03h
Size:
8 bits
BITS
DESCRIPTION
TYPE
DEFAULT
7:6
HPD Event 3
R/WC
00b
5:4
HPD Event 2
R/WC
00b
3:2
HPD Event 1
R/WC
00b
1:0
HPD Event 0
R/WC
00b



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