ISP1362EE/01 PHILIPS [NXP Semiconductors], ISP1362EE/01 Datasheet - Page 89

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ISP1362EE/01

Manufacturer Part Number
ISP1362EE/01
Description
Single-chip Universal Serial Bus On-The-Go controller
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet

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Table 62:
Bit
9
8
7 to 5
HcRhPortStatus[1:2] register: bit description
Symbol
LSDA
PPS
-
Rev. 03 — 06 January 2004
Description
On 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 cleared, a full-speed device is
attached to this port. This field is valid only when
CurrentConnectStatus (CCS) is set.
0 — full-speed device attached
1 — low-speed device attached
On write—ClearPortPower: The HCD clears the PortPowerStatus
(PPS) bit by writing logic 1 to this bit. Writing logic 0 has no effect.
On read—PortPowerStatus: This bit reflects the port power
status, regardless of the type of power switching implemented.
This bit is cleared if an overcurrent condition is detected. The HCD
sets this bit by writing SetPortPower or SetGlobalPower. The HCD
clears this bit by writing ClearPortPower or ClearGlobalPower.
PowerSwitchingMode (PCM) and PortPowerControlMask[NDP]
(PPCM[NDP]) determine which power control switches are
enabled. In the global switching mode (PowerSwitchingMode = 0),
only the Set/ClearGlobalPower command controls this bit. In the
per-port power switching (PowerSwitchingMode = 1), if the
PortPowerControlMask[NDP] (PPCM[NDP]) bit for the port is set,
only Set/ClearPortPower commands are enabled. If the mask is
not set, only Set/ClearGlobalPower commands are enabled. When
port power is disabled, CurrentConnectStatus (CCS),
PortEnableStatus (PES), PortSuspendStatus (PSS) and
PortResetStatus (PRS) should be reset.
0 — port power is OFF
1 — port power is ON
On write—SetPortPower: The HCD writes logic 1 to set the
PortPowerStatus (PPS) bit. Writing logic 0 has no effect.
Remark: This bit always reads logic 1 if power switching is not
supported.
reserved
Single-chip USB OTG controller
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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