FUSB302B
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Table 37. STATUS0
(Address: 40h; Reset Value: 0x0000_0000; Type: Read)
Bit #
Name R/W/C Size (Bits) Description
7 VBUSOK R 1 1: Interrupt occurs when VBUS transitions through vVBUSthr.
This bit typically is used to recognize port partner during
startup
6 ACTIVITY R 1 1: Transitions are detected on the active CC* line. This bit goes
high after a minimum of 3 CC transitions, and goes low with
no Transitions
0: Inactive
5 COMP R 1 1: Measured CC* input is higher than reference level driven from
the MDAC
0: Measured CC* input is lower than reference level driven
from the MDAC
4 CRC_CHK R 1 1: Indicates the last received packet had the correct CRC. This
bit remains set until the SOP of the next packet
0: Packet received for an enabled SOP* and CRC for the
enabled packet received was incorrect
3 ALERT R 1 1: Alert software an error condition has occurred. An alert is
caused by:
TX_FULL: the transmit FIFO is full
RX_FULL: the receive FIFO is full
See Status1 bits
2 WAKE R 1 1: Voltage on CC indicated a device attempting to attach
0: WAKE either not enabled (WAKE_EN=0) or no device
attached
1:0 BC_LVL[1:0] R 2 Current voltage status of the measured CC pin interpreted as host
current levels as follows:
00: < 200 mV
01: > 200 mV, < 660 mV
10: > 660 mV, < 1.23 V
11: > 1.23 V
Note the software must measure these at an appropriate time,
while there is no signaling activity on the selected CC line.
BC_LVL is only defined when Measure block is on which is when
register bits PWR[2]=1 and either MEAS_CC1=1 or MEAS_CC2=1
Table 38. STATUS1
(Address: 41h; Reset Value: 0x0010_1000; Type: Read)
Bit #
Name R/W/C Size (Bits) Description
7 RXSOP2 R 1 1: Indicates the last packet placed in the RxFIFO is type SOP”
(SOP double prime)
6 RXSOP1 R 1 1: Indicates the last packet placed in the RxFIFO is type SOP’
(SOP prime)
5 RX_EMPTY R 1 1: The receive FIFO is empty
4 RX_FULL R 1 1: The receive FIFO is full
3 TX_EMPTY R 1 1: The transmit FIFO is empty
2 TX_FULL R 1 1: The transmit FIFO is full
1 OVRTEMP R 1 1: Temperature of the device is too high
0 OCP R 1 1: Indicates an over-current or short condition has occurred on
the VCONN switch
