Datasheet

Data Sheet ADP1660
Rev. 0 | Page 19 of 28
Table 14. GPIO and Timer Register (Register 0x02)
Bits Bit Name Access Description
7 LED_SD R/W This bit configures the shutdown function for LED1 and LED2.
0 = enter shutdown after LED1 or LED2 flash or torch ends (default).
1 = do not enter shutdown after LED1 or LED2 flash or torch ends.
6 TEST_SR R/W Test mode only. This bit must be set to its default value, 1. Do not set this bit to 0.
[5:4]
IO_CFG
R/W
These bits configure the GPIO pin.
00 = high impedance (default).
01 = torch mode.
10 = TxMASK operation mode.
11 = torch mode without the 8 ms deglitch filter.
[3:0] FL_TIM R/W These bits set the flash timer value.
0000 = 100 ms.
0001 = 200 ms.
…
0100 = 500 ms.
…
0110 = 700 ms.
…
1001 = 1000 ms.
…
1100 = 1300 ms.
…
1111 = 1600 ms (default).
Table 15. Additional Features Register (Register 0x03)
Bits Bit Name Access Description
7 CL_SOFT R/W This bit enables or disables the soft inductor peak current limit.
0 = enable soft inductor peak current limit.
1 = disable soft inductor peak current limit (default). The ADP1660 is disabled when the inductor
peak current limit is reached.
6 DYN_OVP R/W This bit enables or disables dynamic OVP.
0 = disable dynamic OVP (default).
1 = enable dynamic OVP.
5 SW_LO R/W This bit sets the switching frequency.
0 = 3 MHz (default).
1 = 1.5 MHz.
4 FREQ_FB R/W This bit enables or disables frequency foldback to 1.5 MHz.
0 = disable frequency foldback (default).
1 = enable frequency foldback.
[3:1] IL_DC R/W These bits set the input dc current limit. (Bit 0 must be set to 1.)
000 = 1.0 A.
001 = 1.25 A.
010 = 1.5 A.
011 = 1.75 A.
100 = 2.0 A (default).
101 = 2.25 A.
110 = 2.5 A.
111 = 2.75 A.
0 IL_DC_EN R/W This bit enables or disables the input dc current limit function.
0 = disable input dc current limit (default).
1 = enable input dc current limit.