ZHCSLZ8A September 2020 – August 2021 TPS65988DK
PRODUCTION DATA
To enable the setting of multiple I2C addresses using a single TPS65988DK pin, a resistor divider is placed externally on the ADCIN2 pin. The internal ADC then decodes the address from this divider value. Figure 8-28 shows the decoding.
Table 8-6 lists the external divider needed to set bits [3:1] of the I2C Unique Address.
DIV = R2/(R1+R2)(1) | I2C1 UNIQUE ADDRESS (7bit) | I2C2 UNIQUE ADDRESS (7bit) | |||
---|---|---|---|---|---|
DIV_min | DIV_max | I2C1 PORT 1 | I2C1 PORT 2 | I2C2 PORT 1 | I2C2 PORT 2 |
Short to GND | 0.18 | 0x20 | 0x24 | 0x38 | 0x3F |
0.20 | 0.38 | 0x21 | 0x25 | 0x3F | 0x38 |
0.40 | 0.58 | 0x22 | 0x26 | 0x4F | 0x48 |
0.6 | Short to LDO_3V3 | 0x23 | 0x27 | 0x48 | 0x4F |