isp1160 NXP Semiconductors, isp1160 Datasheet - Page 54
isp1160
Manufacturer Part Number
isp1160
Description
Isp1160 Embedded Universal Serial Bus Host Controller
Manufacturer
NXP Semiconductors
Datasheet
1.ISP1160.pdf
(88 pages)
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Table 35:
Bit
18
17
16
15 to 10
9
HcRshPortStatus[1:2] register: bit description
Symbol
PSSC
PESC
CSC
-
LSDA
Rev. 05 — 24 December 2004
Description
PortSuspendStatusChange: This bit is set when the full resume
sequence has been completed. This sequence includes the 20 s
resume pulse, LS EOP, and 3 ms resynchronization delay. The
HCD writes a logic 1 to clear this bit. Writing a logic 0 has no
effect. This bit is also cleared when ResetStatusChange is set.
0 — resume is not completed
1 — resume is completed
PortEnableStatusChange: This bit is set when hardware events
cause the PortEnableStatus bit to be cleared. Changes from HCD
writes do not set this bit. The HCD writes a logic 1 to clear this bit.
Writing a logic 0 has no effect.
0 — no change in PortEnableStatus
1 — change in PortEnableStatus
ConnectStatusChange: This bit is set whenever a connect or
disconnect event occurs. The HCD writes a logic 1 to clear this bit.
Writing a logic 0 has no effect. If CurrentConnectStatus is cleared
when a SetPortReset, SetPortEnable, or SetPortSuspend write
occurs, this bit is set to force the driver to reevaluate the
connection status since these writes should not occur if the port is
disconnected.
0 — no change in CurrentConnectStatus
1 — change in CurrentConnectStatus
Remark: If bit DeviceRemovable[NDP] is set, this bit is set only
after a Root Hub reset to inform the system that the device is
attached.
reserved
On read—LowSpeedDeviceAttached: This bit indicates the
speed of the device connected to this port. When set, a low-speed
device is connected to this port. When clear, a full-speed device is
connected to this port. This field is valid only when the
CurrentConnectStatus is set.
0 — full-speed device attached
1 — low-speed device attached
On write—ClearPortPower: The HCD clears bit PortPowerStatus
by writing a logic 1 to this bit. Writing a logic 0 has no effect.
Embedded USB Host Controller
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
…continued
ISP1160
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