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Product Technical Specification
Refer to the following table for the electrical characteristics of the JTAG interface.
Table 29.
JTAG Electrical Characteristics
Symbol
Parameter
F
JTAG_TCK clock period
tck
t
JTAG_TCK clock period high
c2
t
JTAG_TCK clock period low
c3
t
JTAG_TDI setup time to JTAG_TCK
c4
t
JTAG_TDI hold time from JTAG_TCK
c5
JTAG_TDO valid before JTAG_TCK
t
c6
low-end
JTAG_TDO valid after JTAG_TCK
t
c7
high begin
Figure 7.
JTAG Timing Waveform
3.15. Wake Up Signal (WAKE-UP)
The AirPrime HL77xx modules provide one WAKE-UP signal.
The WAKE-UP signal is used to wake the system up from ultra-low power modes (from OFF or Sleep
modes, FAST_SHUTDOWN, or after a software power off). This signal should be set to high level
(external 1.8V) for at least (TBD) ms until the system is active to wake the module up from these
modes.
The system will not be allowed to go into ultra-low or off mode for as long as this signal is kept high.
By default, the software waits for a high state to wake-up.
Note:
The module has an embedded pull-down on this signal. After a power off mode, the only way to
restart the module is to perform a hardware power off then power on if this signal is not used.
Refer to the following table for the pad description of the WAKE-UP interface.
Table 30.
WAKE-UP Pad Description
Pad Number
19
41110555
Signal Name
I/O
WAKE-UP
I
Rev 1.0
Detailed Interface Specifications
Minimum
Typical
0.038 (TBC)
26 (TBC)
12 (TBC)
-
12 (TBC)
-
12 (TBC)
-
10 (TBC)
-
-
0 (TBC)
-
20 (TBC)
I/O Type
1.8V
November 01, 2017
Maximum
Unit
78 (TBC)
MHz
-
ns
-
ns
-
ns
-
ns
-
s
-
ns
Description
WAKE-UP
33
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