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ST802RT1AFR 数据表(PDF) 18 Page - STMicroelectronics

部件名 ST802RT1AFR
功能描述  10/100 real-time Ethernet 3.3 V transceiver
PDF  58 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST802RT1AFR 数据表(HTML) 18 Page - STMicroelectronics

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Registers and descriptors description
ST802RT1A, ST802RT1B
18/58
Doc ID 17049 Rev 1
6.2
Register description
Table 9.
Abbreviations
Legend
Description
RW
Read/write
RO
Read only
SC
Self-clearing
P
Constant
STRAP
Bit with strap value
LH
Latched high
LL
Latched low
Table 10.
RN00 [0d00, 0x00]: Control register
Bit
Bit name
Description
Default
RW
type
Type
15
Soft reset
1 -> software reset, reset in process
0 -> normal operation
This bit, which is self-clearing, returns 1 until the reset process
is complete. After this reset the configuration is not re-strapped.
0RW
SC
14
Local loop-
back
1 -> Loop-back enabled
0 -> Normal operation
Local loop-back passes data from transmitting to receiving
serial conversion analog logic.
Strap
RW
-
13
Speed
selection
1 -> 100 Mb/s
0 -> 10 Mb/s
Ignored if auto-negotiation is enabled
Strap
RW
-
12
Auto-
negotiation
enable
1 -> Auto-negotiation is enabled
0 -> Auto-negotiation is disabled
Bits 8 and 13 of this register are ignored if this bit is set high.
Not available in FX-mode (auto-negotiation always disabled)
Strap
RW
-
11
Power-down
1 -> Power down
0 -> Normal operation
0RW
-
10
Isolate
1 -> Isolates the core from the MII, with the exception of the
serial management
0 -> Normal operation.
When this bit is set to ‘1’, related pad outputs are forced to tri-
state, inputs are ignored.
MII isolate mode can be activated at initialization by strapping
00000 on physical address.
Strap
RW
-
9
Auto-
negotiation
restart
1 -> Restarts Auto-negotiation process (ignored if Auto-
negotiation is disabled)
0 -> Normal operation
0RW
SC
8
Duplex mode
1 -> full-duplex operation
0 -> Half-duplex operation
Ignored if auto-negotiation is enabled
Strap
RW
-



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