Timer使用参考


1. 使用说明

1.1. Enable Timer

  1. Enable Timer engine – set “TIMER_EN” to 1

  2. Trigger counter – set” TIMER_TRIG” to 1.

  3. Read timer from register “TIMER_CAP[31:0]”

1.2. Set Maximum

  1. Set the value to “TIMER_MAX[31:0]”.

  2. Enable timer

  3. If counter over the “TIMER_MAX[31:0]”, then “TIMER_HIT” will assert.


2. REGISTER TABLE

2.1. TIMERRegister (Bank =30)

TIMER0 Register (Bank = 30)
Index (Absolute) Mnemonic Bit Description
10h (3020h) REG3020 7:0 Default : 0x00 Access : R/W
- 7:2 Reserved.
TIMER_TRIG 1 set: Enable timer counting one time (from 0 to max, then stop).
clear: By reset itself OR set reg_timer_en.
TIMER_EN 0 set: Enable timer counting rolled (from 0 to max, then rolled).
clear: By reset itself OR set reg_timer_trig.
10h (3021h) REG3021 7:0 Default : 0x00 Access : R/W
- 7:1 Reserved.
TIMER_INT_EN 0 set: Enable interrupt.
clear: By reset itself.
11h (3022h) REG3022 7:0 Default : 0x00 Access : RO
- 7:1 Reserved.
TIMER_HIT 0 assert: When counter enabled and matches reg_timer_max.
deassert: By write 1 OR set reg_timer_en, reg_timer_once, reg_timer_max.
12h (3024h) REG3024 7:0 Default : 0xFF Access : R/W
TIMER_MAX[7:0] 7:0 Timer maximum value.
12h (3025h) REG3025 7:0 Default : 0xFF Access : R/W
TIMER_MAX[15:8] 7:0 See description of '3024h'.
13h (3026h) REG3026 7:0 Default : 0xFF Access : R/W
TIMER_MAX[23:16] 7:0 See description of '3024h'.
13h (3027h) REG3027 7:0 Default : 0xFF Access : R/W
TIMER_MAX[31:24] 7:0 See description of '3024h'.
14h (3028h) REG3028 7:0 Default : 0x00 Access : RO
TIMER_CAP[7:0] 7:0 Timer current value.
Note: With non-32-bit-data system, please read from LSB.
14h (3029h) REG3029 7:0 Default : 0x00 Access : RO
TIMER_CAP[15:8] 7:0 See description of '3028h'.
15h (302Ah) REG302A 7:0 Default : 0x00 Access : RO
TIMER_CAP[23:16] 7:0 See description of '3028h'.
15h (302Bh) REG302B 7:0 Default : 0x00 Access : RO
TIMER_CAP[31:24] 7:0 See description of '3028h'.

2.2. TIMERRegister (Bank =30)

TIMER1 Register (Bank = 30)
Index (Absolute) Mnemonic Bit Description
20h (3040h) REG3040 7:0 Default : 0x00 Access : R/W
- 7:2 Reserved.
TIMER_TRIG 1 set: Enable timer counting one time (from 0 to max, then stop).
clear: By reset itself OR set reg_timer_en.
TIMER_EN 0 set: Enable timer counting rolled (from 0 to max, then rolled).
clear: By reset itself OR set reg_timer_trig.
20h (3041h) REG3041 7:0 Default : 0x00 Access : R/W
- 7:1 Reserved.
TIMER_INT_EN 0 set: Enable interrupt.
clear: By reset itself.
21h (3042h) REG3042 7:0 Default : 0x00 Access : RO
- 7:1 Reserved.
TIMER_HIT 0 assert: When counter enabled and matches reg_timer_max.
deassert: By write 1 OR set reg_timer_en, reg_timer_once, reg_timer_max.
22h (3044h) REG3044 7:0 Default : 0xFF Access : R/W
TIMER_MAX[7:0] 7:0 Timer maximum value.
22h (3045h) REG3045 7:0 Default : 0xFF Access : R/W
TIMER_MAX[15:8] 7:0 See description of '3044h'.
23h (3046h) REG3046 7:0 Default : 0xFF Access : R/W
TIMER_MAX[23:16] 7:0 See description of '3044h'.
23h (3047h) REG3047 7:0 Default : 0xFF Access : R/W
TIMER_MAX[31:24] 7:0 See description of '3044h'.
24h (3048h) REG3048 7:0 Default : 0x00 Access : RO
TIMER_CAP[7:0] 7:0 Timer current value.
Note: With non-32-bit-data system, please read from LSB.
24h (3049h) REG3049 7:0 Default : 0x00 Access : RO
TIMER_CAP[15:8] 7:0 See description of '3048h'.
25h (304Ah) REG304A 7:0 Default : 0x00 Access : RO
TIMER_CAP[23:16] 7:0 See description of '3048h'.
25h (304Bh) REG304B 7:0 Default : 0x00 Access : RO
TIMER_CAP[31:24] 7:0 See description of '3048h'.

2.3. TIMERRegister (Bank =30)


TIMER2 Register (Bank = 30)
Index (Absolute) Mnemonic Bit Description
30h (3060h) REG3060 7:0 Default : 0x00 Access : R/W
- 7:2 Reserved.
TIMER_TRIG 1 set: Enable timer counting one time (from 0 to max, then stop).
clear: By reset itself OR set reg_timer_en.
TIMER_EN 0 set: Enable timer counting rolled (from 0 to max, then rolled).
clear: By reset itself OR set reg_timer_trig.
30h (3061h) REG3061 7:0 Default : 0x00 Access : R/W
- 7:1 Reserved.
TIMER_INT_EN 0 set: Enable interrupt.
clear: By reset itself.
31h (3062h) REG3062 7:0 Default : 0x00 Access : RO
- 7:1 Reserved.
TIMER_HIT 0 assert: When counter enabled and matches reg_timer_max.
deassert: By write 1 OR set reg_timer_en, reg_timer_once, reg_timer_max.
32h (3064h) REG3064 7:0 Default : 0xFF Access : R/W
TIMER_MAX[7:0] 7:0 Timer maximum value.
32h (3065h) REG3065 7:0 Default : 0xFF Access : R/W
TIMER_MAX[15:8] 7:0 See description of '3064h'.
33h (3066h) REG3066 7:0 Default : 0xFF Access : R/W
TIMER_MAX[23:16] 7:0 See description of '3064h'.
33h (3067h) REG3067 7:0 Default : 0xFF Access : R/W
TIMER_MAX[31:24] 7:0 See description of '3064h'.
34h (3068h) REG3068 7:0 Default : 0x00 Access : RO
TIMER_CAP[7:0] 7:0 Timer current value.
Note: With non-32-bit-data system, please read from LSB.
34h (3069h) REG3069 7:0 Default : 0x00 Access : RO
TIMER_CAP[15:8] 7:0 See description of '3068h'.
35h (306Ah) REG306A 7:0 Default : 0x00 Access : RO
TIMER_CAP[23:16] 7:0 See description of '3068h'.
35h (306Bh) REG306B 7:0 Default : 0x00 Access : RO
TIMER_CAP[31:24] 7:0 See description of '3068h'.