isp1161bm NXP Semiconductors, isp1161bm Datasheet - Page 63

• Manufacturer Part Number: isp1161bm
• Description: Isp1161 Full-speed Universal Serial Bus Single-chip Host And Device Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 09567
Product data
Table 35:
Bit
18
17
16
15 to 10
9
HcRhPortStatus[1:2] register: bit description
Symbol
PSSC
PESC
CSC
-
LSDA
Rev. 02 — 13 December 2002
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 re-synchronization delay. The
HCD writes logic 1 to clear this bit. Writing 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 logic 1 to clear this bit.
Writing 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 logic 1 to clear this bit.
Writing 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 re-evaluate 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 the DeviceRemovable[NDP] bit is set, this bit is set only
after a Root Hub reset to inform the system that the device is
attached.
reserved
(read) LowSpeedDeviceAttached: This bit indicates the speed of
the device attached to this port. When set, a low-speed device is
attached to this port. When clear, a full-speed device is attached to
this port. This field is valid only when the CurrentConnectStatus is
set.
0 — full-speed device attached
1 — low-speed device attached
(write) ClearPortPower: The HCD clears the PortPowerStatus bit
by writing logic 1 to this bit. Writing logic 0 has no effect.
Full-speed USB single-chip host and device controller
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
…continued
ISP1161
63 of 137