ZHCSFJ2E September 2015 – October 2024 TPS65094
PRODUCTION DATA
S0 to S0iX (Connected Standby) entry and exit occurs when SLP_S0B is pulled low and high, respectively. In Connected Standby state, VTT LDO is turned off, but all PGOODs remain asserted. BUCK1–BUCK3 are not disabled, but instead stop switching while BUCK4–BUCK6 remain in regulation. SWB1_2 also stays enabled. On entry, BUCK2 and BUCK3 decay to 0 V with their VID registers retaining the last programmed values to which the BUCKs ramp back up on exit. The host can write to BUCK2CTRL and BUCK3CTRL registers regardless of the state of the SLP_S0B pin while SLP_S3B and SLP_S4B are high, which means that BUCK2 and BUCK3 can be changed to ramp to a different voltage upon exiting S0iX than they had when entering S0iX state. BUCK1 ramps back up to the default value (1.05 V).
Table 7-11 summarizes status of each VR in Connected Standby state.
VR | S0 → S0IX | S0IX → S0 |
---|---|---|
BUCK1 (VNN) | 0 V | 1.05 V |
BUCK2 (VCCGI) | 0 V | 0 V |
BUCK3 (VCCRAM) | 0 V | 1.05 V |
BUCK4 (V1P8A) | VID value | VID value |
BUCK5 (V1P24A) | VID value | VID value |
BUCK6 (VDDQ) | OTP dependent | OTP dependent |
VTT LDO (VTT) | OFF | VDDQ / 2 |
SWB1_2 | ON | ON |