BC3770 Datasheet, PDF (29/45 Pages) Freescale Semiconductor, Inc – 2.0 A Switch-Mode Charger

5.5.5.2 INT2: Interrupt Register 2
Address (hex)
01
Mode
R/C
Reset Condition:
VSYS  V_{SYS_UVLO}
Reset: 0x00
Bit
Name
Reset
Description
7
FASTTMROFF
0
1: Fast charger timer expired
6
NOBAT
0
1: No battery threshold detected
5
WEAKBAT ^{(19), (20)}
0
1: Weak battery threshold detected
4
OTGFAIL
0
1: Boost failed detected due to overload
3
PRETMROFF
0
1: Pre-charge timer expired
2
CHGRSTF
0
1: Charger restart detected
1
DONE
0
1: Top-off charge timer expired
0
TOPOFF
0
1: Top-off threshold is detected
Notes
19. These interrupts are to be set to 1 when “ENCOMPARATOR” bit 7 in the 07h register set to “1” AND no valid VBUS supply is at preset. If
“ENCOMPARATOR” bit 7 is reset to “0” in no valid VBUS supply, these interrupt events are in no response.
20. These interrupts are to be forcibly overridden to alert the interrupt events in a valid VBUS attached.
5.5.5.3 INT3: Interrupt Register 3
Address (hex)
02
Mode
R/C
Reset Condition:
VSYS  V_{SYS_UVLO}
Reset: 0x00
Bit
Name
Reset
Description
7:4
Reserved
0000
Write “0000”
3
VSYSOK ^{(21), (22)}
0
1: VSYS rising 3.6 V detected in a valid VBUS attached
2
VSYSNG ^{(21), (22)}
0
1: VSYS falling 3.4 V detected in a valid VBUS attached
1
VSYSOLP
0
1: VSYS overload condition debounced is detected (VSYS 3.4 V) in a valid VBUS
attached
0
DISLIMIT ⁽²¹⁾
0
1: Current limit threshold detected in discharge mode
Notes
21. These interrupts are to be set to 1 when “ENCOMPARATOR” bit 7 in the 07h register set to “1” AND no valid VBUS supply is at preset. If
“ENCOMPARATOR” bit 7 is reset to “0” in no valid VBUS supply, these interrupt events are in no response.
22. These interrupts are to be forcibly overridden to alert the interrupt events in a valid VBUS attached.
BC3770
29
Analog Integrated Circuit Device Data
Freescale Semiconductor