UG-498
ADuCM320 Hardware Reference Manual
Rev. C | Page 172 of 196
REGISTER SUMMARY: WAKE-UP TIMER
Table 248. Wake-Up Timer Register Summary
Address
Name
Description
Reset
RW
0x40002500
T4VAL0
Current count value—least significant 16 bits
0x0000
R
0x40002504
T4VAL1
Current count value—most significant 16 bits
0x0000
R
0x40002508
T4CON
Control register
0x0040
RW
0x4000250C
T4INC
12-bit interval for Wake-Up Field A
0x00C8
RW
0x40002510
T4WUFB0
Wake-Up Field B—least significant 16 bits
0x1FFF
RW
0x40002514
T4WUFB1
Wake-Up Field B—most significant 16 bits
0x0000
RW
0x40002518
T4WUFC0
Wake-Up Field C—least significant 16 bits
0x2FFF
RW
0x4000251C
T4WUFC1
Wake-Up Field C—most significant 16 bits
0x0000
RW
0x40002520
T4WUFD0
Wake-Up Field D—least significant 16 bits
0x3FFF
RW
0x40002524
T4WUFD1
Wake-Up Field D—most significant 16 bits
0x0000
RW
0x40002528
T4IEN
Interrupt enable register
0x0000
RW
0x4000252C
T4STA
Status register
0x0000
R
0x40002530
T4CLRI
Clear interrupt register
0x0000
W
0x4000253C
T4WUFA0
Wake-Up Field A—least significant 16 bits
0x1900
R
0x40002540
T4WUFA1
Wake-Up Field A—most significant 16 bits
0x0000
R
REGISTER DETAILS: WAKE-UP TIMER
Current Count Value—Least Significant 16 Bits Register
Address: 0x40002500, Reset: 0x0000, Name: T4VAL0
Table 249. Bit Descriptions for T4VAL0
Bits
Bit Name
Description
Reset
Access
[15:0]
T4VALL
Current count low. Least significant 16 bits of current count value.
0x0
R
Current Count Value—Most Significant 16 Bits Register
Address: 0x40002504, Reset: 0x0000, Name: T4VAL1
Table 250. Bit Descriptions for T4VAL1
Bits
Bit Name
Description
Reset
Access
[15:0]
T4VALH
Current count high. Most significant 16 bits of current count value.
0x0
R
Control Register
Address: 0x40002508, Reset: 0x0040, Name: T4CON
Table 251. Bit Descriptions for T4CON
Bits
Bit Name
Description
Reset
Access
[15:12]
RESERVED
Reserved.
0x0
R
11
STOP_WUFA
Disables updating Field A register T4WUFA. This bit when set stops the
Wake-Up Field A register T4WUFA getting updated with the interval
register I2INC value. This allows the user to update the interval T4INC or
T4WUFA registers safely.
0x0
RW
[10:9]
CLK
Clock select.
0x0
RW
00: PCLK: PCLK (default)
01: LFOSC: 32 kHz internal oscillator
10: LFOSC: 32 kHz internal oscillator
11: ECLKIN: external clock from P1.0
8
WUEN
Wakeup enable.
0x0
RW
0: DIS: cleared by user to disable the wake up timer when the core clock is off
1: EN: set by user to enable the wake up timer even when the core clock is off