![NXP Semiconductors LPC43Sxx User Manual Download Page 754](http://html1.mh-extra.com/html/nxp-semiconductors/lpc43sxx/lpc43sxx_user-manual_1721827754.webp)
UM10503
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
754 of 1441
NXP Semiconductors
UM10503
Chapter 26: LPC43xx/LPC43Sxx USB1 Host/Device controller
26.6.15.2 Host mode
The host controller uses one port. The register is only reset when power is initially applied
or in response to a controller reset. The initial conditions of the port are:
•
No device connected
•
Port disabled
If the port has power control, this state remains until software applies power to the port by
setting port power to one in the PORTSC register.
27:26 PSPD
Port speed
This register field indicates the speed at which the port is operating.
0
RO
0x1
Full-speed
0x2
invalid in device mode
0x3
High-speed
29:28 -
-
Reserved
-
-
31:30 PTS
Parallel transceiver select. All other values are reserved.
-
R/W
0x2
ULPI
0x3
Serial/ 1.1 PHY (Full-speed only)
Table 551. Port Status and Control register in device mode (PORTSC1_D - address 0x4000 7184) bit description
Bit
Symbol
Value
Description
Reset
value
Access
Table 552. Port Status and Control register in host mode (PORTSC1_H - address 0x4000 7184) bit description
Bit
Symbol
Value
Description
Reset
value
Access
0
CCS
Current connect status
This value reflects the current state of the port and may not correspond
directly to the event that caused the CSC bit to be set.
This bit is 0 if PP (Port Power bit) is 0.
Software clears this bit by writing a 1 to it.
0
R/WC
0
No device is present.
1
Device is present on the port.
1
CSC
Connect status change
Indicates a change has occurred in the port’s Current Connect Status. The
host/device controller sets this bit for all changes to the port device connect
status, even if system software has not cleared an existing connect status
change. For example, the insertion status changes twice before system
software has cleared the changed condition, hub hardware will be ‘setting’
an already-set bit (i.e., the bit will remain set). Software clears this bit by
writing a one to it.
This bit is 0 if PP (Port Power bit) is 0
0
R/WC
0
No change in current status.
1
Change in current status.