SMB239

Summit Microelectronics, Inc

2129 3.0 2/23/2009

26

Table 14 – Volatile Configuration & Charger Enable – 8-bit (address: 31h) – Volatile

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Volatile Configuration

0

X

X

X

X

X

X

X

Volatile writes to h00-h07 are disabled

1

X

X

X

X

X

X

X

Volatile writes to h00-h07 are enabled

(if CFG h0E[0]=1)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Charger Enable

X

X

X

0

X

X

X

X

Enabled if 0F[7]=0; Disabled if 0F[7]=1

X

X

X

1

X

X

X

X

Disabled if 0F[7]=0; Enabled if 0F[7]=1

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

USB500/100 Select

(This bit only has an effect when CFG

07[0]=1)

X

X

X

X

0

X

X

X

USB 100mA current level

X

X

X

X

1

X

X

X

USB 500mA current level

Table 15 – Battery status register – 8-bit (address: 36h) – Volatile (read only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Charging Status

1

X

X

X

X

X

X

X

Charger has completed at least 1 successful

charge since being enabled

X

1

X

X

X

X

X

X

Charger has completed at least 1 re-charge

cycle since being enabled

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Timeout Status

X

X

0

0

X

X

X

X

No timeouts have occurred

X

X

0

1

X

X

X

X

Pre-charge timeout

X

X

1

0

X

X

X

X

Fast-charge timeout

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Charging Status

X

X

X

X

X

0

0

X

Idle

X

X

X

X

X

0

1

X

Pre-charging

X

X

X

X

X

1

0

X

Fast-charging

X

X

X

X

X

1

1

X

Charge termination

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Charging Status

X

X

X

X

X

X

X

1

Charger is enabled

Table 16 – Battery fault register – 8-bit (address: 37h) – Volatile (read only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Fault Output

1

X

X

X

X

X

X

X

Battery missing

X

1

X

X

X

X

X

X

Charging error

X

X

1

X

X

X

X

X

Battery over-voltage condition

X

X

X

1

X

X

X

X

Charger over-voltage condition

X

X

X

X

1

X

X

X

Charger under-voltage condition

X

X

X

X

X

X

X

1

Termination Detect Current Threshold has

been hit

Note 4: Never Write to Reserved bits.

CONFIGURATION STATUS REGISTERS