ZHCSG94L August 2013 – February 2019 TPS659038-Q1 , TPS659039-Q1
PRODUCTION DATA.
The TPS659038-Q1 and TPS659039-Q1 have the ability to accept a 16-MHz crystal input. Providing the 16-MHz crystal input to the device allows the output of a stable and accurate 32-kHz clock to be used by the applications processor. The crystal input is divided down by 500 internally to produce the 32-kHz output clock. The crystal should be connected to the device as shown in Figure 7-6.
As shown in Figure 7-6, the OSC16MCAP pin requires a 2.2-µF 6.3-V filtering capacitor near the ball. Also, the crystal requires between 9 pF and 11 pF of load capacitance on both terminals. To meet this requirement, using two 10-pF capacitors is recommended. See Table 7-2 for the specific load capacitors that are recommended.
The 16-MHz crystal is not required for operation of the TPS659038-Q1 and TPS659039-Q1 devices. The OSC16M_CFG OTP bit can be set to disable the 16-MHz crystal completely, and enable the following 2 alternative options for system clock generation:
If the OSC16M_CFG OTP bit is set to 0, a 16-MHz crystal must be present for the proper operation of the device.