Sony CXD5602 User Manual page 73

3.1.4.3.3 PMIC_INT with RTC_IRQ_OUT (Open Drain)
In this mode, the pin P11_00 is used bidirectionally as RTC_IRQ_OUT output role, and as PMIC_INT (for RTC
synchronization) input role. By using pins of both CXD5602 and PMIC connected to CXD5602 as Open Drain,
the above two roles can be compatible without any dynamic I/O control.
The following are settings that pin P11_00 is used as PMIC_INT input and RTC_IRQ_OUT output.

IO_PMIC_INT.ENZI=1

IOCSYS_IOMD0.PMIC_INT=2
Note:
Before receiving PMIC_INT, by using the register of RTC{0,1}, set External Alarm Output Select Signal to
External Interrupt (RTC{0,1}_RTC_CTL.SYNC_SEL=2). Figure I/O Configuration-11 shows the signal routes.
Besides, when you want to use PMIC_INT as CPU interrupt, select pin P11_00 using GPIO External Interrupt
selection (Section 3.2.4.3 GPIO External Interrupt) function.
P11_00
P12_00
Figure I/O Configuration-11 PMIC_INT Signal Routes (MODE=2 Open Drain)
IO Configuration
2
1
0 1 2 3
0
1 0
2 0
3
1
2
3 OPEN
2
1
0 1 2 3
0
1
2 0
3
1 OPEN
2 OPEN
3 OPEN
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Set nagative logic
IOCSYS_IMOD0.PMIC_INT
GP_PMIC_INT.DIR
select
ExternalAlerm2
GP_PMIC_INT.OUT
GP_PMIC_INT.IN
IO_PMIC_INT.ENZI
IOCSYS_IMOD0.RTC_IRQ_OUT
GP_RTC_IRQ_OUT.DIR
GP_RTC_IRQ_OUT.OUT
GP_RTC_IRQ_OUT.IN
IO_RTC_IRQ_OUT.ENZI
CXD5602 User Manual
RTC0
OExtAlarm
PMIC_INT
ExternalAlerm2
ExternalAlerm1
ExternalAlerm0
RTC1
OExtAlarm
PMIC_INT
ExternalAlerm2
ExternalAlerm1
ExternalAlerm0
Interrupt to CPU
(PMIC_INT)