MPC8536-RDK Freescale Semiconductor, MPC8536-RDK Datasheet - Page 1363

• Manufacturer Part Number: MPC8536-RDK
• Description: BOARD REF COMEXPRESS MPC8536
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536-RDK

• Contents: CSB1880, CSB1801, Cables, Documentation, Enclosure, Power Supply with cord
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.3.2.15 USB Mode Register (USBMODE)—Non-EHCI
This register is not defined in the EHCI specification. This register controls the operating mode of the
module.
Freescale Semiconductor
Bits
Offset 0x1A8
2
1
0
Reset
W
R
Name
CSC
CCS
31
PE
Port enabled/disabled
Host mode:
Device mode:
Connect change status
Host mode:
1 Connect Status has changed.
0 No change.
Device mode:
Current connect status
Host mode:
1 Device is present
0 No device present.
Device mode:
1 Attached
0 Not attached.
• Ports can only be enabled by the controller as a part of the reset and enable. Software cannot enable a port
• When the port is disabled, (0) downstream propagation of data is blocked except for reset.
• This field is zero if Port Power(PP) is zero in host mode.
• The device port is always enabled. (This bit will be one).
• This bit indicates a change has occurred in the port’s Current Connect Status. the controller sets this bit for
• This field is zero if Port Power(PP) is zero.
• This bit is undefined.
• This field is zero if Port Power(PP) is zero in host mode.
• A one indicates that the device successfully attached and is operating in either high-speed or full-speed as
by writing a one to this field. Ports can be disabled by either a fault condition (disconnect event or other fault
condition) or by the host software. Note that the bit status does not change until the port state actually
changes. There may be a delay in disabling or enabling a port due to other host and bus events.
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.
indicated by the High Speed Port bit in this register. A zero indicates that the device did not attach
successfully or was forcibly disconnected by the software writing a zero to USBCMD[RS] (run bit). It does
not state the device being disconnected or suspended.
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
Table 21-22. PORTSC Register Field Descriptions (continued)
Figure 21-21. USB Mode (USBMODE)
—
All zeros
Description
5
Universal Serial Bus Interfaces
SDIS SLOM —
4
Access: Read/Write
3
2
1
CM
21-29
0