JAJSEF7G December 2014 – February 2019 TPS659037
PRODUCTION DATA.
The TPS659037 device integrates eight configurable general-purpose I/Os that are multiplexed with alternative features as described in Table 5-5.
PIN | PRIMARY FUNCTION | SECONDARY FUNCTION |
---|---|---|
GPIO_1 | General-purpose I/O | Output: VBUSDET (VBUS detection) |
GPIO_2 | General-purpose I/O | Output: REGEN2 |
GPIO_4 | General-purpose I/O | Output: SYSEN1 (external system enable) |
GPIO_5 | General-purpose I/O | Output: CLK32KGO1V8 (32-kHz digital-fated output clock in VRTC domain) or SYNCCLKOUT (Fallback synchronization clock for SMPS, 2.2MHz) |
GPIO_6 | General-purpose I/O | Output: SYSEN2 (external system enable) |
GPIO_7 | General-purpose I/O | Input: POWERHOLD |
For GPIO characteristics, refer to:
Each GPIO event can generate an interrupt on either rising and/or falling edge and each line is individually maskable (as described in Section 5.3.8)
All GPIOs can be used as wake-up events.
NOTE
GPIO_4 and GPIO_6 are in the VIO domain and need the I/O supply to be available.
When configured in OTP as SYSEN1 and SYSEN2, GPIO_4 and GPIO_6 can be programmed to be part of power-up sequence.
Selection between primary and secondary functions is controlled through the registers
PRIMARY_SECONDARY_PAD1 and PRIMARY_SECONDARY_PAD2.
When configured as primary functions, all GPIOs are controlled through the following set of registers:
When configured as secondary functions, none of the GPIO control registers (see Table 5-5) affect GPIO lines. Line configuration (pullup, pulldown, open-drain) for secondary functions is held in a separate register set, as well as specific function settings.