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Section 26 USB 2.0 Host/Function Module
Page 1468 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
26.3.39 Device Address n Configuration Registers (DEVADDn) (n = 0 to A)
DEVADDn is a register that specifies the address and port number of the hub to which the
communication target peripheral device is connected and that also specifies the transfer speed of
the peripheral device for PIPE0 to PIPEA.
When the host controller function is selected, this register should be set before starting
communication using each pipe.
The bits in this register should be modified while no valid pipes are using the settings of this
register. Valid pipes refer to the ones satisfying both of condition 1 and 2 below.
1. This register is selected by the DEVSEL bits as the communication target.
2. The PID bits are set to BUF for the selected pipe or the selected pipe is the DCP with SUREQ
being 1.
This register is initialized by a power-on reset.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit:
Initial value:
R/W:
0000000000000000
R R/W R/W R/W R/W R/W R/WR/W R/W R/W R R R R R R
— UPPHUB[3:0] HUBPORT[2:0] USBSPD[1:0] ———— —
—
Bit Bit Name
Initial
Value R/W Description
15 0 R Reserved
This bit is always read as 0. The write value should
always be 0.