2.6.5 System Configuration

Name:	SYS-CFG
Address:	0x03
Default:	0xC0
Property:	R/W


Bit	7	6	5	4	3	2	1	0
	TSDMSK	TWRMSK	HPMPEN	AWKPDIS	FSD [1:0]		B1HCEN	USER
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Default	1	1	0	0	0	0	0	0

Bit 7 – TSDMSK Thermal Shutdown Masking Bit

If the bit is 1, it will prevent nINTO from being asserted LOW upon TSD = 1. Default is 1 (Thermal Shutdown TSD will not be flagged by nINTO).

Bit 6 – TWRMSK Thermal Warning Masking Bit

If the bit is 1, it will prevent nINTO from being asserted LOW upon a Thermal Warning event. Default is 1 (Thermal Warning will not be flagged by nINTO).

Bit 5 – HPMPEN High-Performance Mode Enable Pin Bit

This bit must be set to 1 through an I²C command in order to enable the HPM pin. If the bit is 0, setting the HPM pin high will have no effect on the power status state machine.

Bit 4 – AWKPDIS Automatic Wake-Up Pulse DISable Bit

If the bit is set to 1, it disables the generation of a wake-up pulse on pin nSTRTO before an automatic start-up sequence after a fault (thermal shutdown or hiccup with HCPEN = 0) occurred in HIBERNATE mode.

Bits 3:2 – FSD [1:0] Switching (oscillator) frequency displacement bits, default is 00 (no displacement)

Bit 1 – B1HCEN Buck1 Hysteretic Control Mode Enable Bit

When set to 1, this bit enables the Hysteretic Control Mode for Buck1 in AutoPFM operation.

Bit 0 – USER User-accessible bit

User-accessible bit that can be used to store system information. This bit is volatile and it is cleared upon SVIN UVLO.