SH7670 Datasheet, PDF (729/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 17 USB 2.0 Host/Function Module (USB)
17.3.29 DCP Maximum Packet Size Register (DCPMAXP)
DCPMAXP is a register that specifies the maximum packet size for the DCP.
This register is initialized by a power-on reset.
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
DEVSEL[3:0]
—
—
—
—
—
MXPS[6:0]
Initial value: 0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
R/W: R/W R/W R/W R/W R
R
R
R
R R/W R/W R/W R/W R
R
R
Bit
Bit Name
15 to 12 DEVSEL[3:0]
Initial
Value
0000
R/W Description
R/W Device Select
When the host controller function is selected, these
bits specify the communication target peripheral
device address.
0000: Address 0000
0001: Address 0001
:
:
1001: Address 1001
1010: Address 1010
Other than above: Setting prohibited
These bits should be set after setting the address to
the DEVADDn register corresponding to the value
to be set in these bits.
For example, before setting DEVSEL to 0010, the
address should be set to the DEVADD2 register.
These bits should be set while CSSTS is 0, PID is
NAK, and SUREQ is 0.
Before modifying these bits after modifying the PID
bits for the DCP from BUF to NAK, check that
CSSTS and PBUSY are 0. However, if the PID bits
have been modified to NAK by this module,
checking PBUSY through software is not
necessary.
When the function controller function is selected,
these bits should be set to B'0000.
Rev. 1.00 Nov. 14, 2007 Page 703 of 1262
REJ09B0437-0100