SMB239

Summit Microelectronics, Inc

2129 3.0 2/23/2009

24

Table 9 – Battery charging control – 8-bit (address: 05h) – Non-Volatile & Volatile (mirror)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Status Output

0

X

X

X

X

X

X

X

STAT is active low while charging, active

high all other times

1

X

X

X

X

X

X

X

STAT blinks while charging, is active low

when finished, active high when disabled

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Glitch Filter

X

X

0

X

X

X

X

X

Glitch filter enabled

X

X

1

X

X

X

X

X

Glitch filter disabled

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Fast-charge Timeout

X

X

X

X

0

0

X

X

350 min

X

X

X

X

0

1

X

X

699 min

X

X

X

X

1

0

X

X

1398 min

X

X

X

X

1

1

X

X

Disabled

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Pre-charge Timeout

X

X

X

X

X

X

0

0

44 min

X

X

X

X

X

X

0

1

87 min

X

X

X

X

X

X

1

0

175 min

X

X

X

X

X

X

1

1

Disabled

Table 10 – STAT Output – 8-bit (address: 07h) – Non-Volatile & Volatile (mirror)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

STAT Output Indicator

X

X

X

X

X

0

X

X

Battery charge status

X

X

X

X

X

1

X

X

Input over-voltage or input under-voltage

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Battery over-voltage Behavior

X

X

X

X

X

X

0

X

Charger is shutdown

X

X

X

X

X

X

1

X

Charger is not shutdown

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

USB500/100 Control

X

X

X

X

X

X

X

0

Device is always limited to USB100 charge

levels

X

X

X

X

X

X

X

1

USB100/500 mode is determined by

Register 31[3]

Table 11 – Charging Mode – 8-bit (address: 0Ch) – Non-Volatile

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Charging Mode

X

X

X

X

X

0

0

X

Power cycle initiates charging

X

X

X

X

X

0

1

X

Power cycle initiates charging only when

VBATT < VFLT – 220mV

X

X

X

X

X

1

0

X

Power cycle initiates charging only when

VBATT < VFLT – 390mV

X

X

X

X

X

1

1

X

Power cycle initiates charging only when

VBATT < VFLT – 550mV

CONFIGURATION REGISTERS (CONT.)