User's Manual

4.45 Function Address Register (FADDR)
4.46 Power Management Register (POWER)
www.ti.com Registers
Table 60. Receive CPPI Completion Pointer (RCPPICOMPPTR) Field Descriptions (continued)
Bit Field Value Description
0 RDBK_MODE Readback / Compare Mode
0 Compare Mode. Indicates that the value that is presented on bits 31:2 of the read data
should be compared against the value that is currently contained in bits 31:2 of this location.
If the two match, the interrupt bit corresponding to this Receive Queue should be deasserted.
1 Readback Mode. Indicates that the value that is presented on bits 31:2 of the read data
should be read from this location and the interrupt for this Receive Queue should be
asserted. This bit is read as zero.
The Function Address Register (FADDR) is shown in Figure 60 and described in Table 61 .
Figure 60. Function Address Register (FADDR)
7 6 0
Reserved FUNCADDR
R-0 R/W-0
LEGEND: R/W = Read/Write; - n = value after reset
Table 61. Function Address Register (FADDR) Field Descriptions
Bit Field Value Description
7 Reserved 0 Reserved
6-0 FUNCADDR 0-7Fh 7-bit address of the peripheral part of the transaction
When used in Peripheral mode (DevCtl.D2=0), this register should be written with the address
received through a SET_ADDRESS command, which will then be used for decoding the function
address in subsequent token packets.
When used in Host mode (DevCtl.D2=1), this register should be set to the value sent in a
SET_ADDRESS command during device enumeration as the address for the peripheral device.
The Power Management Register (POWER) is shown in Figure 61 and described in Table 62 .
Figure 61. Power Management Register (POWER)
7 6 5 4 3 2 1 0
ISOUPDATE SOFTCONN HSEN HSMODE RESET RESUME SUSPENDM ENSUSPM
R/W-0 R/W-0 R/W-1 R-0 R/W-0 R/W-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; - n = value after reset
Table 62. Power Management Register (POWER) Field Descriptions
Bit Field Value Description
7 ISOUPDATE 0-1 When set, the USB controller will wait for an SOF token from the time TxPktRdy is set before
sending the packet. If an IN token is received before an SOF token, then a zero length data packet
will be sent. Note: This is only valid in Peripheral Mode. This bit only affects endpoints performing
Isochronous transfers.
6 SOFTCONN 0-1 If Soft Connect/Disconnect feature is enabled, then the USB D+/D- lines are enabled when this bit
is set and tri-stated when this bit is cleared. Note: This is only valid in Peripheral Mode.
5 HSEN 0-1 When set, the USB controller will negotiate for high-speed mode when the device is reset by the
hub. If not set, the device will only operate in full-speed mode.
4 HSMODE 0-1 This bit is set when the USB controller has successfully negotiated for high-speed mode.
SPRUGH3 – November 2008 Universal Serial Bus (USB) Controller 111
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