RDC
®
RISC DSP Controller
R8810LV
RDC Semiconductor Co.
Rev:1.2
Subject to change without notice
61
Set 1: A interrupt request is generated when the count register equals a maximum count.
Set 0: Timer 2 will not issue interrupt request.
Bit 12-6
: Reserved.
Bit 5: MC
, Maximum Count Bit. When the timer reaches its maximum count, the MC bit will set to 1 by H/W. This bit is set
regardless of the EN bit (66h.15).
Bit 4-1
: Reserved.
Bit 0: COUNT
, Continuous Mode Bit.
Set 1: Timer is continuously running when timer reaches the maximum count.
Set 0: The EN bit (66h.15) is cleared and the timer is hold after each timer count reaches the maximum count.
Bit 15 – 0: TC15-TC0
, Timer 2 Count Value. This register contains the current count of timer 2. The count is incremented by
one every four internal processor clocks.
Bit 15-0 : TC15 – TC0
, Timer 2 Compare A Value.
Watchdog Timer
Timer 1 can also be configure as a watchdog timer. Software must fist programmed the Timer 1 Mode/Control (5Eh), Count
(58h), and Max Count (5Ah, 5Ch) registers and then program the Watchdog Timer Interrupt Control Register ( 42h) to enable
the watchdog timer interrupt , The Timer 1 Count Register must be reloaded at intervals less than the Timer 1 Maxcount value
to assure the watchdog interrupt is not occurred.
Offset : 60h
0
Reset Value :
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Timer 2 Count Register
TC15 - TC0
Offset : 62h
0
Reset Value :
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Timer 2 Maxcount Compare A Register
TC15 - TC0
Watchdog Timer Interrupt Control Register
Offset : 42h
0
Reset Value : 000Fh
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Reserved
MSK
PR2
PR1
PR0