參數(shù)資料
型號: ISP1362
廠商: NXP Semiconductors N.V.
英文描述: Single-chip Universal Serial Bus On-The-Go controller
中文描述: 單芯片通用串行總線和On - The - Go控制器
文件頁數(shù): 89/150頁
文件大?。?/td> 647K
代理商: ISP1362
Philips Semiconductors
ISP1362
Single-chip USB OTG controller
Product data
Rev. 03
06 January 2004
89 of 150
9397 750 12337
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
9
LSDA
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
fi
eld 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 re
fl
ects 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.
8
PPS
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
7 to 5
-
Table 62:
Bit
HcRhPortStatus[1:2] register: bit description
continued
Symbol
Description
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