12-5
MSM66591/ML66592 User's Manual
Chapter 12 General-Purpose 8-Bit Timer Function
12
[4]
General-Purpose 8-Bit Timer Interrupt Control Register (GTINTCON)
GTINTCON is an 8-bit register that controls the generation of interrupts for the general-
purpose 8-bit timer and general-purpose 8-bit event counter.
At reset (when the
RES
signal is input, the BRK instruction is executed, the watchdog
timer is overflown, or an operation code trap is generated), GTINTCON becomes F0H.
Figure 12-3 shows the configuration of GTINTCON.
[Description of Each Bit]
• EGTM (bit 0)
The EGTM bit enables or disables the generation of interrupt requests by the gen-
eral-purpose 8-bit timer (GTMC).
When this bit is "0", interrupts are disabled. When "1", interrupts are enabled.
• QGTM (bit 1)
QGTM indicates whether an interrupt request has been generated by the general-
purpose 8-bit timer (GTMC).
When this bit is "0", no interrupt request has been generated. When "1", an interrupt
request has been generated.
• EEVC (bit 2)
EEVC enables or disables the generation of interrupt requests by the general-
purpose 8-bit event counter (GEVC).
When this bit is "0", interrupts are disabled. When "1", interrupts are enabled.
• QEVC (bit 3)
QEVC indicates whether an interrupt request has been generated by the general-
purpose 8-bit event counter (GEVC).
When this bit is "0", no interrupt request has been generated. When "1", an interrupt
request has been generated.
Figure 12-3 GTINTCON Configuration
"—" indicates a bit that is not provided.
"1" is read if a read instruction is executed.
—
QEVC EEVC QGTM EGTM
1
0
GTMC interrupt request generation: enabled
GTMC interrupt request generation: disabled
1
0
GEVC interrupt request generation: enabled
GEVC interrupt request generation: disabled
1
0
GTMC interrupt request generation: yes
GTMC interrupt request generation: no
—
—
—
1
0
GEVC interrupt request generation: yes
GEVC interrupt request generation: no
7
3
2
1
0
6
5
4
GTINTCON
Содержание MSM66591
Страница 1: ...MSM66591 ML66592 User s Manual CMOS 16 bit microcontroller FEUL66591 66592 01 Issue Date Mar 4 2002...
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