Hardware Development Guide of Module Product
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3.11
Interactive Application Interface
3.11.1
Description of PINs
Table 3-10 mainly describes the interfaces interacting with the application processor,
including the following three types of interfaces: querying, wakeup and status
indication.
Table 3-10 Interactive Application Interface
PIN
Signal Name
I/O Type
Function
6
AP_READY
DI
Module querying AP
sleep status
9
MODULE_READY
DO
AP querying Module
sleep status
10
AP_WAKEUP_MODULE DI
AP wakeup Module
11
MODULE
_WAKEUP_AP
DO
Module wakeup AP
19
MODULE_POWERON
DO
MODULE power-on
status indication
3.11.2
Interface Application
The ZM5202 module provides 5 handshake signals for the communication with the
application processor (AP). By MODULE_POWERON, AP can query whether LGA
is powered on and is working normally. By MODULE_READY, AP queries whether
the LGA module has entered the sleep status, wakes up the module under the sleep
status by AP_WAKEUP _MODULE. In the same way, when AP is in the sleep
status, the LGA module can query the AP status by AP_READY, and wakes up AP
by MODULE _WAKEUP_AP.
AP_READY: Indicates that the AP server is sleep: the high PWL indicates the sleep
status, and the low PWL indicates the wakeup status.
MODULE_READY: Indicates that the module is sleep: the high PWL indicates the
sleep status, and the low PWL indicates the wakeup status.
AP_WAKEUP_MODULE: After the module has entered the sleep status, the AP
server can wake up the module by the low PWL control; if it’s always on the low
