ZHCSIM2D June 2010 – August 2021 PCM9211
PRODUCTION DATA
The PCM9211 has two sources for reset: the internal power-on reset circuit (hereafter called POR) and the external reset circuit. See Figure 7-4 for an illustration of the timing sequence during an internal power-on reset event. Initialization (reset) is done automatically when VDD exceeds 2.2 V (typ).
When only the onboard POR is to be used, the RST pin should be connected to VDD directly. An external pull-up resistor should not be used, because the RST pin has an internal pull-down resistor (typ 50 kΩ). If an external resistor is used, then the reset is not released. The reset sequence is shown in Figure 7-1. The Section 6.8 table lists the timing requirements to reset the device using the RST pin.
The condition of each output pins during the device reset is shown in Table 7-2.
CLASSIFICATION | PIN NAME | AT RST = L(1) |
---|---|---|
Main output port | SCKO | L |
BCK | L | |
LRCK | L | |
DOUT | L | |
Flag and status | ERROR/INT0 | H |
NPCM/INT1 | L | |
MPIOs and MPOs | MPIO_A0 through MPIO_A3 | Hi-Z |
MPIO_B0 through MPIO_B3 | Hi-Z | |
MPIO_C0 through MPIO_C3 | Hi-Z | |
MPO0, MPO1 | L | |
Serial I/F | MDI/SDA | Hi-Z |
MDO/ADR0 | Hi-Z | |
Oscillation circuit | XTO | Output |
Common supply for ADC | VCOM | Output |
Coax input | RXIN0, RXIN1 | H |