Data Sheet

ADP1649

Rev. 0 | Page 19 of 28

I²C REGISTER MAP

The lowest bit number (0) represents the least significant bit, the highest bit number (7) represents the most significant bit, and R/W indicates

whether the bit is read only (R), write only (W), or both read and write (R/W).

Table 10. Design Information Register (Register 0x00)

Bit

Bit Name

R/W

Reset State

[7:0]

Manufacturer Information

R

00100010

Table 11. VREF and Timer Register (Register 0x02)

Bit

Bit Name

R/W

Description

[7:6]

IO2_CFG

R/W

GPIO2 configuration

00 = high impedance (default)

01 = indicator LED

10 = TxMASK2 operation mode

11 = analog input (to ADC)

[5:4]

IO1_CFG

R/W

GPIO1 configuration

00 = high impedance (default)

01 = torch

10 = TxMASK1 operation mode

11 = reserved

[3:0]

FL_TIM

R/W

Flash timer value setting

0000 = 100 ms

0001 = 200 ms

0010 = 300 ms

0011 = 400 ms

0100 = 500 ms

0101 = 600 ms

0110 = 700 ms

0111 = 800 ms

1000 = 900 ms

1001 = 1000 ms

1010 = 1100 ms

1011 = 1200 ms

1100 = 1300 ms

1101 = 1400 ms

1110 = 1500 ms

1111 = 1600 ms (default)