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| 型号： | LTC4245IUHF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 30/36页 |
| 文件大小： | 431K |
| 描述： | IC CNTRLR HOT SWAP 38-QFN |
| 标准包装： | 52 |
| 类型： | 热交换控制器 |
| 应用： | CompactPCI? |
| 内部开关： | 无 |
| 电源电压： | 3.3V，5V，12V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-WFQFN 裸露焊盘 |
| 供应商设备封装： | 38-QFN（5x7） |
| 包装： | 管件 |
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LTC4245
30
4245fa
Table 6. LTC4245 Register Address and Contents
REGISTER ADDRESS*
REGISTER NAME
READ/WRITE
DESCRIPTION
DECIMAL
HEX
0, 8
00h, 08h
STATUS (A)
R
System Status Information
1, 9
01h, 09h
ALERT (B)
R/W
Controls Which Faults Cause ALERT# Pin to be Pulled Low
2, 10
02h, 0Ah
CONTROL (C)
R/W
Controls Part Behavior Such As Auto-Retry, Sequencing, etc.
3, 11
03h, 0Bh
ON (D)
D3:D0 R/W**, D7:D4 R Sets State and Reports Status of Switches
4, 12
04h, 0Ch
FAULT1 (E)
R/W
Fault Log for Undervoltage and Overcurrent
5, 13
05h, 0Dh
FAULT2 (F)
R/W
Fault Log for Power Bad, PGI, FET Short, BD_SEL#, GPIO1
6, 14
06h, 0Eh
GPIO (G)
G2:G0 R, G7:G3 R/W
Sets State and Reports Status of GPIO1 to GPIO3 pins, Control
Which Pin is Multiplexed to the GPIO Channel of ADC
7, 15
07h, 0Fh
ADCADR (H)
R/W
4-Bit ADC Channel Address for On-Demand ADC Measurement
16
10h
12VIN (I)
R/W
ADC 12V
IN
Voltage Data
17
11h
12VSENSE (J)
R/W
ADC 12V Current Sense Voltage Data
18
12h
12VOUT (K)
R/W
ADC 12V
OUT
Voltage Data
19
13h
5VIN (L)
R/W
ADC 5V
IN
Voltage Data
20
14h
5VSENSE (M)
R/W
ADC 5V Current Sense Voltage Data
21
15h
5VOUT (N)
R/W
ADC 5V
OUT
Voltage Data
22
16h
3VIN (O)
R/W
ADC 3V
IN
Voltage Data
23
17h
3VSENSE (P)
R/W
ADC 3.3V Current Sense Voltage Data
24
18h
3VOUT (Q)
R/W
ADC 3V
OUT
Voltage Data
25
19h
VEEIN (R)
R/W
ADC V
EEIN
Voltage Data
26
1Ah
VEESENSE (S)
R/W
ADC 12V Current Sense Voltage Data
27
1Bh
VEEOUT (T)
R/W
ADC V
EEOUT
Voltage Data
28 to 31
1Ch to 1Fh
GPIOADC (U)
R/W
ADC GPIO Voltage Data
All registers are 8-bit wide.
* Register address MSBs b7 b5 are ignored.
** Cannot set D3:D0 high if bit A1 set.
Set bit C7 before writing.
Table 7. STATUS Register A (00h)- Read Only
BIT
NAME
OPERATION
A7
ADC Busy
Indicates State of ADC; 1 = ADC Busy Measuring, 0 = ADC Quiescent
A6
BD_SEL# Input
State of the BD_SEL# Pin; 1 =BD_SEL# High, 0 = BD_SEL# Low
A5
FET Short Present
Indicates Potential FET Short on at Least One Supply, if ADC Current Sense Voltage Measurement Exceeds 7
LSB While FET is Off; 1 = FET is Shorted, 0 = FET is Not Shorted
A4
LOCAL_PCI_RST# Output
LOCAL_PCI_RST# Pin Open-Drain Output State; 1 = High Impedance, 0 = Pulls Low
A3
PCI_RST# Input
State of the PCI_RST# Pin; 1 = PCI_RST# High, 0 = PCI_RST# Low
A2
Power Bad
Indicates Power Bad Present on at Least One of the Supply Outputs; 1 = Power Bad, 0 = No Power Bad
A1
SS Busy
Indicates SS Pin is Being Used to Ramp Up a Supply, Affects Writing to D3:D0 Bits
1 = SS Pin Ramping, Cannot Set D3:D0 High, 0 = SS Pin Reset
A0
Undervoltage
Indicates Undervoltage Present on at Least One of the Input Supply; 1 = Undervoltage, 0 = Not Undervoltage
APPLICATIO S I FOR ATIO
U
U
U
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