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MITX-CORE-820 bảng dữ liệu(PDF) 69 Page - Emerson Network Power

tên linh kiện MITX-CORE-820
Giải thích chi tiết về linh kiện  Installation and Use
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Firmware
MITX-CORE-820 Installation and Use (6806800M10D)
69
5.2.7
EC Command Register
There are seven valid commands for the EC command register (Write IO 66h). Other values are
ignored by the EC if it is being written.
4
Burst Enable
1 - Enables the burst
0 - Disables the burst
3
Flag
1 = Previous access port is command port (EC_CMD/EC_STS)
0 = Previous access port is data port
2Reserved
1
IBF
Input buffer full flag
0
OBF
Output buffer full flag
Table 5-4 EC Status I/O Port Register (continued)
Status Bit
Name
Description
Table 5-5 EC Command Register
Value
Command
Description
80h
EC Read
Read operation for an internal register in EC space
81h
EC Write
Write operation for an internal register in EC space
82h
EC Burst Enable
Enable EC burst operation mode
83h
EC Burst Disable
Disable EC burst operation mode
84h
EC Query
Query the SCI event queue
Others
Firmware Command
No responded from hardware EC.



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