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參數(shù)資料
| 型號： | STLC5444 |
| 廠商： | 意法半導體 |
| 英文描述： | Quad Feed Power Supply(ISDN四饋電電源) |
| 中文描述： | 四飼料電源（綜合業(yè)務數(shù)字網(wǎng)四饋電電源） |
| 文件頁數(shù)： | 10/17頁 |
| 文件大?。?/td> | 140K |
| 代理商： | STLC5444 |
The LER is used to enable or disable the individ-
ual line drivers. The line drivers will only become
active if the corresponding bit in the TOR is inac-
tive.The LERis a read/writeregister.
The MPI is the interface containing the following
pins :
D3-D0
A0
ALE
RD
WR
CS
INT
RESET
Bidirectional
Input
Input
Input
Input
Input
Output
Input
DataBus
Address Line
Address Latch Enable
Read Enable
Write Enable
Chip Select
COD Interrupt
Resetpin
The 4-bit bidirectionaldata bus (D3-D0) is used to
communicate with the registers. Access to the
registers is controlled by CS, RD, WR, ALE, and
A0 as shown below. A read or write cyclemust be
preceded by a valid A0. A0 is latched internally in
a transparent latch by ALE. The selection of the
status group or the LER is determined by the con-
tent of the IAR.
The truth table for the MPI control is shown below
:
CS
RD
WR
A0
0
1
0
0
Write IAR (T bit is read only)
0
0
1
0
Read IAR and T bit
0
1
0
1
Write LER
0
0
1
1
Read status groups or LER
1
X
X
X
No access
Indirect Address Register(IAR) and T/I Bit
The IAR is 3 bits wide and accessible throughthe
data port, D2-D0. The content of the Indirect Ad-
dress Register (IAR2-IARO) determines the se-
lection of the status groups or the LER. The ther-
mal overload bit T/I is read and written at the
sametime as IAR and occupies D3.
This register has the followingformat :
Bit
0
1
2
3
Symbol
IARO
IAR1
IAR2
T/I
Bit 0 of the IAR
Bit 1 of the IAR
Bit 2 of the IAR
T bit: (Read only)
Logical 0: temperature normal (default value)
Logical 1: temperature above 160
°
C (all drivers shut off)
I bit
: (write only)
Logical 0: INT pin disabled
Logical 1: COD interrupts enabled via INT pin‘
IAR2-IAR0
addressthe statusgroups and the LER as shownbelow:
IAR2
0
0
0
0
1
1
1
1
IAR1
0
0
1
1
0
0
1
1
IAR0
0
1
0
1
0
1
0
1
Select
LVD
OLD
COD
LEC
RESERVED
RESERVED
LER
TOR
STLC5444
10/17
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| STLC5444B1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD FEEDER POWER SUPPLY |
| STLC5444FN | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD FEEDER POWER SUPPLY |
| STLC5445 | 功能描述:監(jiān)控電路 Asics RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| STLC5460 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LINE CARD INTERFACE CONTROLLER |
| STLC5460FN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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