CP3BT23_14 Datasheet, PDF (62/324 Pages) Texas Instruments – CP3BT23 Reprogrammable Connectivity Processor with Bluetooth and Dual CAN Interfaces

CP3BT23
SNOSCX3A – JULY 2013 – REVISED JANUARY 2014
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10.3.6 Interrupt Enable and Mask Register 2 (IENAM2)
The IENAM2 register is a word-wide read/write register which holds bits that individually enable and
disable the maskable interrupt sources IRQ32 through IRQ47. The register is initialized to FFFFh at reset.
15
0
IENA
IENA
Each Interrupt Enable bit enables or disables the corresponding interrupt request IRQ32
through IRQ47, for example IENA47 controls IRQ47.
0 – Interrupt is disabled.
1 – Interrupt is enabled.
10.3.7 Interrupt Status Register 0 (ISTAT0)
The ISTAT0 register is a word-wide read-only register. It indicates which maskable interrupt inputs to the
ICU are active. These bits are not affected by the state of the corresponding IENA bits.
15
IST
1
0
Res.
IST
The Interrupt Status bits indicate if a maskable interrupt source is signalling an interrupt
request. IST15:1 correspond to IRQ15 to IRQ1 respectively. Because the IRQ0 interrupt is
not used, bit 0 always reads back 0.
0 – Interrupt is not active.
1 – Interrupt is active.
10.3.8 Interrupt Status Register 1 (ISTAT1)
The ISTAT1 register is a word-wide read-only register. It indicates which maskable interrupt inputs into the
ICU are active. These bits are not affected by the state of the corresponding IENA bits.
15
0
IST
IST
The Interrupt Status bits indicate if a maskable interrupt source is signalling an interrupt
request. IST31:16 correspond to IRQ31 to IRQ16, respectively.
0 – Interrupt is not active.
1 – Interrupt is active.
10.3.9 Interrupt Status Register 2 (ISTAT2)
The ISTAT2 register is a word-wide read-only register. It indicates which maskable interrupt inputs into the
ICU are active. These bits are not affected by the state of the corresponding IENA bits.
15
0
IST
IST
The Interrupt Status bits indicate if a maskable interrupt source is signaling an interrupt
request. IST47:32 correspond to IRQ47 to IRQ32, respectively.
0 – Interrupt is not active.
1 – Interrupt is active.
62
Interrupts
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