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TUSB422 Datasheet(PDF) 28 Page - Texas Instruments

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Part # TUSB422
Description  USB Type-C Port Control with Power Delivery
PDF  71 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TUSB422 Datasheet(HTML) 28 Page - Texas Instruments

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TUSB422
SLLSEW6 – NOVEMBER 2016
www.ti.com
Product Folder Links: TUSB422
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
7.6.15 Alert Byte 1 Register (address = 0x11) [reset = 0x00]
This register is used to indicate a status change event. When a status change event occurs and its
corresponding Alert mask is unmasked, the TUSB422 will assert the INT_N low. The INT_N remains asserted
until all events are cleared by write of 1’b1. Once all events are cleared or corresponding Alert mask is masked,
the INT_N will be de-asserted high.
Figure 23. Alert Byte 1 Register
7
6
5
4
3
2
1
0
VENDOR_IRQ
_STAT
Reserved
VBUS_SINK_D
IS
RX_BUF_OVR
FAULT
VBUS_ALARM
_LO
RCU
R
RCU
RCU
RCU
RCU
LEGEND: R/W = Read/Write; R = Read only
Table 20. Alert Byte 1 Register Descriptions
Bit
Field
Type
Reset
Description
7
VENDOR_IRQ_STAT
RCU
0
This field is set if a Vendor defined interrupt that is unmasked is
set. TCPM SW should first clear the appropriate bit in Vendor
Interrupt Status register before clearing this field.
0b: Vendor IRQ not asserted.
1b: Vendor IRQ asserted.
6:4
Reserved
R
0x0
Reserved
3
VBUS_SINK_DIS
RCU
0
VBUS Sink Disconnect Detected.
0b: Cleared
1b: A VBUS Sink Disconnect Threshold crossing has been
detected
2
RRX_BUF_OVR
RCU
0
Rx Buffer Overflow 0b: TUSB422 Rx buffer is functioning
properly
1b: TUSB422 Rx buffer has overflowed Writing 1 to this register
acknowledges the overflow. The overflow is cleared by writing to
ALERT.ReceiveSOP*MessageStatus
1
FAULT
RCU
0
Fault
0b: No Fault
1b: A Fault has occurred. Read the FAULT_STATUS register
0
VBUS_ALARM_LO
RCU
0
VBUS Voltage Alarm Lo
0b: Cleared
1b: A low-voltage alarm has occurred



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