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TUSB422 Datasheet(PDF) 48 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) 48 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
7.6.37 Receive Byte Count Register (address = 0x30) [reset = 0x00]
The TUSB422 clears this field to 0x00 upon reception or transmission of a Hard Reset ordered set or after a
disconnection is detected. The TUSB422 will also clear this field to 0x00 after the RX_SOP_STATUS bit in Alert
register is cleared. Software will use this register to determine the numbers of bytes in the Receiver Buffer Data
object.
Figure 45. Receive Byte Count Register
7
6
5
4
3
2
1
0
RECEIVE_BYTE_COUNT
RU
LEGEND: R/W = Read/Write; R = Read only
Table 42. Receive Byte Count Register Descriptions
Bit
Field
Type
Reset
Description
7:0
RECEIVE_BYTE_COUNT
RU
0x00
Indicates number of bytes in this register that are not stale. The
TCPM should read the first RECEIVE_BYTE_COUNT bytes in
this register. This is the number of bytes in the
RX_BUFFER_DATA_OBJECTS plus three (for the
RX_BUF_FRAME_TYPE and RX_BUF_HEADER).
7.6.38 Receive Buffer Frame Type Register (address = 0x31) [reset = 0x00]
Figure 46. Receive Buffer Frame Type Register
7
6
5
4
3
2
1
0
Reserved
RX_SOP_MESSAGE
R
RU
LEGEND: R/W = Read/Write; R = Read only
Table 43. Receive Buffer Frame Type Register Descriptions
Bit
Field
Type
Reset
Description
7:3
Reserved
R
0x00
Shall be set to zero by sender and ignored by receiver
2:0
RX_SOP_MESSAGE
RU
0x0
000b: Received SOP
001b: Received SOP'
010b: Received SOP''
011b: Received SOP_DBG’
100b: Received SOP_DBG’’
110b: Received Cable Reset
All others are reserved.
7.6.39 Receive Buffer Header Byte 0 Register (address = 0x32) [reset = 0x00]
Figure 47. Receive Buffer Header Byte 0 Register
7
6
5
4
3
2
1
0
RX_BUF_HDR_BYTE_0
RU
LEGEND: R/W = Read/Write; R = Read only
Table 44. Receive Buffer Header Byte 0 Descriptions
Bit
Field
Type
Reset
Description
7:0
RX_BUF_HDR_BYTE_0
RU
0x00
Byte 0 (bits 7:0) of USB PD message header.



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