SH7205 Datasheet, PDF (1181/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 24 USB 2.0 Host/Function Module (USB)
Initial
Bit
Bit Name
Value R/W Description
2 to 0 RHST[2:0] 000
R
PORT1 Reset Handshake
These bits indicate the state of reset handshake on
PORT1. Table 24.7 lists the reset handshake
statuses of PORT1.
These bits indicate 100 after 1 is written to USBRST.
If HSE has been set to 1 for PORT1, these bits
indicate 111 as soon as this module detects Chirp K
from the function device.
This module fixes the value of the RHST bits when 0
is written to USBRST for PORT1 and this module
completes SE0 driving. If 1xxxx is written to UTST
(i.e., a parameter for host function testing is set),
RHST indicates 011.
Note: ∗ Clear the value of bits RWUPE, USBRST, RESUME, and UACT when the function
controller function is selected.
Table 24.7 PORT1 USB Data Bus Line Statuses
Bus Status
Powered or no connection
Reset handshake in progress
Low-speed connection
Full-speed connection
High-speed connection
When Function Controller
Function is Selected





When Host Controller
Function is Selected
000
1xx
001
010
011
Rev. 1.00 Mar. 25, 2008 Page 1149 of 1868
REJ09B0372-0100