HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 577
HD6417660
Manufacturer Part Number
HD6417660
Description
Renesas 32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417660.pdf
(846 pages)
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Bit
14 to 2 —
1
0
Bit Name
OCI
LPS
Initial
Value
All 0
0
0
R/W
R
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0. The operation is not guaranteed if 1 is
written to these bits.
Over Current Indicator
This bit reports the overcurrent condition when the global
report is performed. When this bit is set, an overcurrent
condition exists. When this bit is cleared, all power
operations are normal. This bit is always 0 when the
overcurrent protection at each port is carried out.
0: All power operations are normal.
1: An overcurrent condition exists.
(Read) Local Power Status
The root hub does not support the local power status
function. Therefore, this bit is always read as 0.
(Write) Clear Global Power
This bit is written to 1 to power off (clears the PPS bit in
the HcRhPortStatus register) all ports in global power
mode (PSM bit in the HcRhDescriptorA register = 0).
In power mode at each port, the PPS bit is cleared to the
port in which the PPCM bit in the HcRhDescriptorB
register is not set. When 0 is written to, this bit is invalid.
Rev. 1.00, 02/04, page 539 of 804
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