cp3bt13 National Semiconductor Corporation, cp3bt13 Datasheet - Page 62

• Manufacturer Part Number: cp3bt13
• Description: Cp3bt13 Reprogrammable Connectivity Processor With Bluetooth-r And Can Interfaces
• Manufacturer: National Semiconductor Corporation

www.national.com
13.1.2
The Wake-Up Enable (WKENA) register is a word-wide
read/write register that individually enables or disables
wake-up events from the MIWU channels. The WKENA reg-
ister is cleared upon reset, which disables all wake-up/inter-
rupt channels. The register format is shown below.
WKEN
13.1.3
The WKIENA register is a word-wide read/write register that
enables and disables interrupts from the MIWU channels.
The register format is shown below.
WKIEN
15
15
Wake-Up Enable Register (WKENA)
Wake-Up Interrupt Enable Register (WKIENA)
The Wake-Up Enable bits enable and disable
the MIWU channels. The WKEN15:0 bits cor-
respond to the WUI15:0 channels, respective-
ly.
0
1
The Wake-Up Interrupt Enable bits control
whether MIWU channels generate interrupts.
0
1
–
–
–
–
WUI15
MIWU channel wake-up events disabled.
MIWU channel wake-up events enabled.
Interrupt disabled.
Interrupt enabled.
WUI0
WKIEN
WKEN
WKEDG
Figure 7. Multi-Input Wake-Up Module Block Diagram
WKPND
15
0
15
15
0
0
Peripheral BUS
. . . . . . . . . . .
. . . . . . . . . . .
WKIENA
62
WKENA
13.1.4
The WKICTL1 register is a word-wide read/write register
that selects the interrupt request signal for the associated
MIWU channels WUI7:0. At reset, the WKICTL1 register is
cleared, which selects MIWU Interrupt Request 0 for all
eight channels. The register format is shown below.
WKINTR
15 14 13 12 11 10 9
WKIN
TR7
0
0
WKIN
TR6
Wake-Up Interrupt Control Register 1
(WKICTL1)
The Wake-Up Interrupt Request Select fields
select which of the four MIWU interrupt re-
quests are activated for the corresponding
channel.
00 – Selects MIWU interrupt request 0.
01 – Selects MIWU interrupt request 1.
10 – Selects MIWU interrupt request 2.
11 – Selects MIWU interrupt request 3.
WKICTL 1-2
WKIN
Encoder
TR5
WKIN
TR4
4
8
EXINT3:0 to ICU
Wake-Up Signal
To Power Mgt
WKIN
7
TR3
6
DS009
WKIN
5
TR2
4
WKIN
3
TR1
2
WKIN
1
TR0
0