ISP1160BD-S NXP Semiconductors, ISP1160BD-S Datasheet - Page 38

• Manufacturer Part Number: ISP1160BD-S
• Manufacturer: NXP Semiconductors

Specifications of ISP1160BD-S

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

ISP1160-01_7
Product data sheet
10.1.3 HcCommandStatus register (R/W: 02H/82H)
Table 11.
The HcCommandStatus register is used by the HC to receive commands issued by the
HCD, and it also reflects the HC’s current status. To the HCD, it appears to be a ‘write to
set’ register. The HC must ensure that bits written as logic 1 become set in the register
while bits written as logic 0 remain unchanged in the register. The HCD may issue multiple
distinct commands to the HC without concern for corrupting previously issued commands.
The HCD has normal read access to all bits.
The SchedulingOverrunCount field indicates the number of frames with which the HC has
detected the scheduling overrun error. This occurs when the Periodic list does not
complete before EOF. When a scheduling overrun error is detected, the HC increments
the counter and sets the SchedulingOverrun field in the HcInterruptStatus register.
Code (Hex): 02 — read
Code (Hex): 82 — write
Bit
31 to 11
10
9
8
7 to 6
5 to 0
HcControl register: bit description
Symbol
-
RWE
RWC
-
HCFS
-
Rev. 07 — 29 September 2009
Description
reserved
RemoteWakeupEnable: This bit is used by the HCD to enable or
disable the remote wake-up feature upon the detection of upstream
resume signaling. When this bit is set and the ResumeDetected bit in
HcInterruptStatus is set, a remote wake-up is signaled to the host
system. Setting this bit has no impact on the generation of hardware
interrupt.
RemoteWakeupConnected: This bit indicates whether the HC
supports remote wake-up signaling. If remote wake-up is supported
and used by the system, it is the responsibility of system firmware to
set this bit during POST. The HC clears the bit upon a hardware reset
but does not alter it upon a software reset. Remote wake-up signaling
of the host system is host-bus-specific and is not described in this
specification.
reserved
HostControllerFunctionalState for USB:
00B — USBReset
01B — USBResume
10B — USBOperational
11B — USBSuspend
A transition to USBOperational from another state causes
start-of-frame (SOF) generation to begin 1 ms later. The HCD may
determine whether the HC has begun sending SOFs by reading the
StartofFrame field of HcInterruptStatus.
This field can be changed by the HC only when in the USBSuspend
state. The HC can move from the USBSuspend state to the
USBResume state after detecting the resume signaling from a
downstream port.
The HC enters USBReset after a software reset and a hardware reset.
The latter also resets the Root Hub and asserts subsequent reset
signaling to downstream ports.
reserved
Embedded USB host controller
ISP1160/01
© ST-ERICSSON 2009. All rights reserved.
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