UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
618 of 1269
NXP Semiconductors
UM10503
Chapter 24: LPC43xx USB1 Host/Device controller
21
WKDC
Wake on disconnect enable (WKDSCNNT_E)
This bit is 0 if PP (Port Power bit) is 0.
0
R/W
0
Disables the port to wake up on device disconnects.
1
Writing this bit to a one enables the port to be sensitive to device
disconnects as wake-up events.
22
WKOC
Wake on over-current enable (WKOC_E)
0
R/W
0
Disables the port to wake up on over-current events.
1
Writing a one to this bit enabled the port to be sensitive to over-current
conditions as wake-up events.
23
PHCD
PHY low power suspend - clock disable (PLPSCD)
In host mode, the PHY can be put into Low Power Suspend – Clock
Disable when the downstream device has been put into suspend mode or
when no downstream device is connected. Low power suspend is
completely under the control of software.
0
R/W
0
Writing a 0 enables the PHY clock. Reading a 0 indicates the status of the
PHY clock (enabled).
1
Writing a 1 disables the PHY clock. Reading a 1 indicates the status of the
PHY clock (disabled).
24
PFSC
Port force full speed connect
0
R/W
0
Port connects at any speed.
1
Writing this bit to a 1 will force the port to only connect at Full Speed. It
disables the chirp sequence that allows the port to identify itself as High
Speed. This is useful for testing FS configurations with a HS host, hub or
device.
25
-
-
Reserved
27:26 PSPD
Port speed
This register field indicates the speed at which the port is operating. For HS
mode operation in the host controller and HS/FS operation in the device
controller the port routing steers data to the Protocol engine. For FS and
LS mode operation in the host controller, the port routing steers data to the
Protocol Engine w/ Embedded Transaction Translator.
0
RO
0x0
Full-speed
0x1
Low-speed
0x2
High-speed
29:28 -
-
Reserved
-
-
31:30 PTS
Parallel transceiver select. All other values are reserved.
<tbd>
R/W
0x2
ULPI
0x3
Serial/ 1.1 PHY (Full-speed only)
Table 482. Port Status and Control register in host mode (PORTSC1_H - address 0x4000 7184) bit description
…continued
Bit
Symbol
Value
Description
Reset
value
Access