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參數資料
| 型號： | MIC2593-2BTQ TR |
| 廠商： | Micrel Inc |
| 文件頁數： | 19/26頁 |
| 文件大小： | 220K |
| 描述： | IC PCI HOT PLUG CTLR DUAL 48TQFP |
| 標準包裝： | 2,000 |
| 類型： | 熱交換控制器 |
| 應用： | PCI，PCI-X |
| 內部開關： | 無 |
| 電源電壓： | 3.3V，5V，±12V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP |
| 供應商設備封裝： | 48-TQFP（7x7） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC2593-2BTQTR MIC2593-2BTQTR-ND |
Micrel, Inc.
MIC2593
September 2008
19
M9999-092208
Status Register, Slot B (STATB)
8-Bits, Read-Only
Status Register, Slot B (STATB)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read-only
read-only
read/write
read/write
read/write
read/write
read/write
FAULTB
MAINB
VAUXB
VAUXBF
12MVBF
12VBF
5VBF
3VBF
Bit(s)
Function
Operation
FAULTB
FAULT Status, Slot B
1 = /FAULTB pin asserted
(/FAULTB pin is LOW)
0 = /FAULTB pin de-asserted
(/FAULTB pin is HIGH)
See Notes 1 and 2
MAINB
MAIN Enable Status, Slot B
Represents the actual state (on/off) of the four Main
Power outputs for Slot B (+12V, 12V, +5V and +3.3V)
1 = Main Power ON
0 = Main Power OFF
VAUXB
VAUX Enable Status, Slot B
Represents the actual state (on/off) of the Auxiliary
Power output for Slot B
1 = AUX Power ON
0 = Main Power OFF
VAUXBF
Overcurrent Fault: VAUXB supply B
1 = Fault, 0 = No fault
12MVBF
Overcurrent Fault: 12V supply B
1 = Fault, 0 = No fault
12VBF
Overcurrent Fault: +12V supply B
1 = Fault, 0 = No fault
5VBF
Overcurrent Fault: 5V supply B
1 = Fault, 0 = No fault
3VBF
Overcurrent Fault: 3V supply B
1 = Fault, 0 = No fault
Power-Up Default Value:
0000 0000
b
= 00
h
Command_Byte Value (R/W): 0000 0101
b
= 05
h
The power-up default value is 00
h
. Both slots are disabled upon power-up, i.e., all supply outputs are off. In response to an
overcurrent fault condition, writing a logical 1 back into the active (or set) bit position will clear the bit and de-assert /INT. The
status of the /FAULTB pin is not affected by reading the Status Register or by clearing active status bits.
Note 1.
If FAULTB has been set by an overcurrent condition on one or more of the MAIN outputs, the ONB input must go LOW to reset FAULTB.
If FAULTB has been set by a VAUXB overcurrent event, the AUXENB input must go LOW to reset FAULTB.
If an overcurrent has occurred on both a MAIN output and the VAUX output of slot B, both ONB and AUXENB of the slot must go low to
reset FAULTB.
Note 2.
Neither the FAULTB bit nor the /FAULTB pin is active when the MIC2593 power paths are controlled by the System Management
Interface. When using SMI power path control, AUXENB and ONB pins for that slot must be tied to GND.
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