HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 555

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit
2
1
Bit Name
BLF
CLF
Initial
Value
0
0
R/W
R/W
R/W
Bulk List Filled
This bit is used to indicate that there are some TDs in the
list. This bit is set by the host controller driver to the list
when TD* is added to ED.
When the host controller starts to process the head of the
list, it checks this bit. As long as this bit is 0, the host
controller does not start to process the list. When this bit
is 1, the host controller starts to process the list to set this
bit to 0. When the host controller detects TD in the list, the
host controller sets this bit to 1. When TD is never found
in the list and the host controller driver does not set this
bit, the host controller completes the processing of the list.
This bit is still 0 when the bulk list processing is stopped.
0: The list is not processed.
1: The list is processed.
Control List Filled
This bit is used to indicate that there are some TDs in the
control list. This bit is set by the host controller driver
when TD is added to ED in the control list.
When the host controller starts to process the head of the
control list, it checks this bit. As long as this bit is 0, the
host controller does not start to process the control list. If
this bit is 1, the host controller starts to process the control
list and this bit is set to 0. When the host controller detects
TD in the list, the host controller sets this bit to 1. When
TD is never detected in the control list and the host
controller driver does not set this bit, the host controller
completes the processing of the control list. This bit is still
0 when the control list processing is stopped.
0: The list is not processed.
1: The list is processed.
Description
Rev. 1.00, 02/04, page 517 of 804