UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
510 of 1269
NXP Semiconductors
UM10503
Chapter 23: LPC43xx USB0 Host/Device/OTG controller
The following registers and register bits are used for OTG operations. The values of these
register bits are independent of the controller mode and are not affected by a write to the
RESET bit in the USBCMD register.
•
All identification registers
•
All device/host capabilities registers
•
All bits of the OTGSC register (
)
•
The following bits of the PORTSC register (
–
PTS (parallel interface select)
–
STS (serial transceiver select)
–
PTW (parallel transceiver width)
–
PHCD (PHY low power suspend)
–
WKOC, WKDC, WKCN (wake signals)
–
PIC[1:0] (port indicators)
–
PP (port power)
23.6.2 Device/host capability registers
Table 394. CAPLENGTH register (CAPLENGTH - address 0x4000 6100) bit description
Bit
Symbol
Description
Reset
value
Access
7:0
CAPLENGTH
Indicates offset to add to the register base
address at the beginning of the Operational
Register
0x40
RO
23:8
HCIVERSION
BCD encoding of the EHCI revision number
supported by this host controller.
0x100
RO
31:24
-
These bits are reserved and should be set to
zero.
-
-
Table 395. HCSPARAMS register (HCSPARAMS - address 0x4000 6104) bit description
Bit
Symbol
Description
Reset
value
Access
3:0
N_PORTS
Number of downstream ports. This field specifies
the number of physical downstream ports
implemented on this host controller.
0x1
RO
4
PPC
Port Power Control. This field indicates whether
the host controller implementation includes port
power control.
0x1
RO
7:5
-
These bits are reserved and should be set to zero. -
-
11:8
N_PCC
Number of Ports per Companion Controller. This
field indicates the number of ports supported per
internal Companion Controller.
0x0
RO
15:12
N_CC
Number of Companion Controller. This field
indicates the number of companion controllers
associated with this USB2.0 host controller.
0x0
RO
16
PI
Port indicators. This bit indicates whether the
ports support port indicator control.
0x1
RO
19:17
-
These bits are reserved and should be set to zero. -
-