參數(shù)資料
型號(hào): LPC47N350
廠商: SMSC Corporation
英文描述: LEGACY FREE KEYBOARD EMBEDDED CONTROLLER WITH SPI AND LPC DOCKING INTERFACE
中文描述: 傳統(tǒng)的嵌入式免費(fèi)鍵盤和LPC對(duì)接的SPI接口控制器
文件頁(yè)數(shù): 4/228頁(yè)
文件大?。?/td> 1269K
代理商: LPC47N350
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SMSC DS – LPC47M192
Page 4
Rev. 03/30/05
DATASHEET
TABLE OF CONTENTS
1
GENERAL DESCRIPTION ....................................................................................................................3
2
PIN LAYOUT........................................................................................................................................10
3
PIN CONFIGURATION ........................................................................................................................11
4
DESCRIPTION OF PIN FUNCTIONS..................................................................................................12
4.1
B
UFFER
N
AME
D
ESCRIPTIONS
...........................................................................................................20
4.2
P
INS
T
HAT
R
EQUIRE
E
XTERNAL
P
ULLUP
R
ESISTORS
..........................................................................20
4.2.1
Super I/O Pins ........................................................................................................................................20
4.2.2
Hardware Monitoring Block Pins.............................................................................................................21
BLOCK DIAGRAM...............................................................................................................................22
5
6
POWER FUNCTIONALITY..................................................................................................................23
6.1
VCC/HVCC
P
OWER
........................................................................................................................23
6.1.1
3 VOLT OPERATION / 5 VOLT TOLERANCE.......................................................................................23
6.2
VREF
P
IN
........................................................................................................................................23
6.3
VTR
S
UPPORT
.................................................................................................................................23
6.3.1
Trickle Power Functionality.....................................................................................................................23
6.4
32.768
K
H
Z
T
RICKLE
C
LOCK
I
NPUT
...................................................................................................25
6.4.1
Indication of 32KHZ Clock ......................................................................................................................25
6.5
I
NTERNAL
PWRGOOD.....................................................................................................................25
6.6
M
AXIMUM
C
URRENT
V
ALUES
.............................................................................................................25
6.6.1
Super I/O Functions................................................................................................................................25
6.6.2
Hardware Monitoring Block Functions....................................................................................................26
6.7
P
OWER
M
ANAGEMENT
E
VENTS
(PME/SCI).......................................................................................26
FUNCTIONAL DESCRIPTION.............................................................................................................27
7.1
S
UPER
I/O
R
EGISTERS
.....................................................................................................................27
7.2
H
OST
P
ROCESSOR
I
NTERFACE
(LPC) ...............................................................................................27
7.3
LPC
I
NTERFACE
...............................................................................................................................28
7.3.1
LPC Interface Signal Definition...............................................................................................................28
7.3.2
LPC Cycles.............................................................................................................................................28
7.3.3
Field Definitions......................................................................................................................................28
7.3.4
LFRAME# Usage....................................................................................................................................28
7.3.5
I/O Read and Write Cycles .....................................................................................................................29
7.3.6
DMA Read and Write Cycles..................................................................................................................29
7.3.7
DMA Protocol .........................................................................................................................................29
7.3.8
POWER MANAGEMENT .......................................................................................................................29
7.3.8.1
CLOCKRUN Protocol....................................................................................................................................29
7.3.8.2
LPCPD Protocol..............................................................................................................................................29
7.3.9
SYNC Protocol .......................................................................................................................................29
7.3.9.1
Typical Usage .................................................................................................................................................29
7.3.9.2
SYNC Timeout ...............................................................................................................................................30
7.3.9.3
SYNC Patterns and Maximum Number of SYNCS........................................................................................30
7.3.9.4
SYNC Error Indication....................................................................................................................................30
7.3.9.5
I/O and DMA START Fields..........................................................................................................................30
7.3.9.6
Reset Policy.....................................................................................................................................................30
7.3.10
LPC TRANSFERS ..............................................................................................................................30
7.3.10.1
Wait State Requirements.................................................................................................................................30
7.4
F
LOPPY
D
ISK
C
ONTROLLER
..............................................................................................................31
7.4.1
FDC Internal Registers...........................................................................................................................31
7.4.2
STATUS REGISTER ENCODING..........................................................................................................41
7.4.3
Instruction Set.........................................................................................................................................48
7.4.4
DATA TRANSFER COMMANDS............................................................................................................54
7.4.5
DIRECT SUPPORT FOR TWO FLOPPY DRIVES.................................................................................64
7
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