Samsung S5PC100 User Manual page 803

S5PC100 USER'S MANUAL (REV1.0)
(Operational, resume, suspend, reset), the list processing pointers (the UHCBHDED and UHCHDED registers),
list processing enables (bits 5-2 of the UHCCON register), and interrupt enables (in the UHCINTENB register).
1. Remote host wake from sleep is not absolutely USB 1.1 specification-compliant. The USB host
controller may not be able to feed back resume signaling to downstream devices within 100
microseconds.
2. In isochronous transfer mode, the latency associated with using VLIO and PC Card memory
accesses may violate the 10-µs time limit. As a result, the USB host controller sends a corrupted
CRC (an OUT packet) or not issue an ACK; in the latter case, an interrupt occurs (if enabled) and
the ISO packet is dropped by software.
Figure 8.9-1 Typical List Structure
NOTES:
USB HOST CONTROLLER
8.9-3