S3C2416X RISC MICROPROCESSOR
SYSTEM
CONTROLLER
2-33
8.4 RESET CONTROL REGISTERS (SWRST AND RSTCON)
Software can reset S3C2416 using SWRST register. The waveform of the reset signals are determined by
RSTCON register.
Register
Address
R/W
Description
Reset Value
SWRST
0x4C00_0044
R/W
Software reset control register
0x0000_0000
RSTCON 0x4C00_0064
R/W
Reset control register
0x0006_0101
When software write the predefined value, 0x533C2416, into SWRST register, then the system controller asserts
internal reset signal and initializes internal state.
SWRST
Bit
Description
Initial Value
SWRST
[31:0]
If this field has 0x533C2416, then the system will restart.
0x0000_0000
RSTCON register controls the duration of the system reset signal.
RSTCON
Bit
Description
Initial Value
RESERVED [31:19]
-
0x0000
RESERVED
[18:17] Should be set ‘0x3’
0x3
PWROFF_SLP [16]
Power Control on pad retention cell I/O.
Retention cell I/O’s power will be off when sleep mode, but
when wakeup process starts, User should write ‘1’ to produce
power on retention I/O (see below detailed description)
1 = set automatically when sleep mode.
0 = cleared by user writing ‘1’
0
RSTCNT [15:8]
Only watch dog and software reset can start counter which is
counted from RSTCNT value. This RSTCNT value effects
delay of releasing reset. After this counter expired, internal
reset (like HRESETn) will be HIGH state.
Range which user can configure is from 0x01 to 0xFE.
(Don’t write 0xFF to this field)
0x01
PWRSETCNT [7:0]
This field configures value of Power Settle Down Counter.
Only When waking up from sleep mode, Power Settle Down
Counter starts counting to wait for stability of external voltage
source. As soon as counter reaches PWRSETCNT value, the
system escapes from sleep mode.
Range which user can configure is from 0x01 to 0xFE.
(Don’t write 0xFF to this field)
Real count number = (PWRSETCNT[7:0] + 1) * 2048
0x01
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...