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PDP83TG720SWCSTQ1 bảng dữ liệu(PDF) 30 Page - Texas Instruments

tên linh kiện PDP83TG720SWCSTQ1
Giải thích chi tiết về linh kiện  DP83TG720S-Q1 1000BASE-T1 Automotive Ethernet PHY
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PDP83TG720SWCSTQ1 bảng dữ liệu(HTML) 30 Page - Texas Instruments

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Table 7-2. Datapath BIST Programming (continued)
Loopback
Mode
To enable
loopback
mode
To enable data
generator and
checker : MAC
packets
To check in-
coming MAC
packets status
To enable data
generator and
checker :
PRBS stream
To check in-
coming PRBS
status : PRBS
stream
Other care-
abouts
5
SGMII loopback •
write :
reg[0x0000]
= 0x4140
•
Data is
generated
externally at
Sgmii TX
pins
•
Write :
reg[0x0619]
= 0x1114
•
Data can be
verified at
Sgmii RX
pins.
•
Packet
errors can
additionaly
be checked
internally
by :
–
read :
reg[0x0
63C]=
[15:0] of
total
receive
d
packets
count.
–
read :
reg[0x0
63D] =
[31:16]
of total
receive
d
packets
count.
–
read :
reg[0x0
63E] =
Packets
receive
d with
CRC
errors
•
Data is
generated
externally at
Sgmii Tx
pins.
•
Not
applicable
as data is
external.
•
PRBS
stream
checker
works only
with internal
data
generator.
•
Generated
data will be
going to Cu
cable side,
to disable
this
transmissio
n : write
reg[0x041F]
= 0x1000
6
RGMII Reverse
loopback
•
write :
reg[0x0016]
= 0x0010
•
write :
reg[0x0619
]=0x1005
•
write :
reg[0x0624
]=0x55BF
•
read :
reg[0x063C]
= [15:0] of
total
received
packets
count.
•
read :
reg[0x063D]
= [31:16] of
total
received
packets
count.
•
read :
reg[0x063E]
= Packets
received
with CRC
errors
•
write :
reg[0x0619
]=0x0557
•
write :
reg[0x0624
]=0x55BF
Step 1 : write :
reg[0x0620][1]
= 1'b1
Step 2 :
•
read :
reg[0x0620]
[7:0] =
Number of
error bytes
received.
•
read :
reg[0x0620]
[8] (1
indicates
PRBS data
is coming in
and checker
is locked)
•
Generated
data will be
going to Cu
cable side,
to disable
this
transmissio
n : write
reg[0x041F]
= 0x1000
DP83TG720S-Q1
SNLS604 – SEPTEMBER 2020
www.ti.com
30
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Copyright © 2020 Texas Instruments Incorporated



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