HUAWEI MU739 HSPA+ LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 01 (2011-08-24)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
35
Pin
No.
Pin Name
I/O Description
DC Characteristics (V)
Min
Typical Max
14
HSIC_HOST_
ACTIVE
I
HSIC Host Active;
Inactive: the host
controller is switched
off;
Active: the host
controller is switched
on. Used to
synchronize
enumeration.
-0.3
1.8
2.1
15
HSIC_SLAVE_
WAKEUP
I
HSIC Slave Wakeup,
used by MU739 in L0
to indicate that link can
be switched to L2
because MU739 has
no data to transfer.
-0.3
1.8
2.1
41
HSIC_HOST_
WAKEUP
O
Used by MU739 to
resume link from L2 or
L3 to L0 when data is
available on MU739.
-0.3
1.8
2.1
44
HSIC_SUSPEND_
REQUEST
O
Used by CP in L0 to
indicate that link can
be switched to L2
because CP has no
data to transfer.
-0.3
1.8
2.1
HSIC interface is mainly used signal transfer between the IC on the board, decreasing
the USB power consumption. It’s recommended the PCB circuit length shorter than
normal, not exceed 10 cm.
There are five status of bus conditions that are used to indicate operation.
Table 3-10
Status of bus conditions
(
TBD
)
Condition
Strobe
Data
Idle
H
L
Connect
L
H
Resume
L
H
Suspend
H
L
Reset
L
L
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