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参数资料
| 型号： | ICS952703YFLFT |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 217.9 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封装： | LEAD FREE, MO-118, SSOP-48 |
| 文件页数： | 16/17页 |
| 文件大小： | 143K |
| 代理商： | ICS952703YFLFT |
8
Integrated
Circuit
Systems, Inc.
ICS952703
Preliminary Product Preview
0813B—05/17/05
I
2C Table: Byte Count Register
Bit 7
BC7
RW
0
Bit 6
BC6
RW
0
Bit 5
BC5
RW
0
Bit 4
BC4
RW
0
Bit 3
BC3
RW
1
Bit 2
BC2
RW
1
Bit 1
BC1
RW
1
Bit 0
BC0
RW
1
I
2C Table: WD Time Control & Async Frequency Selection Register
Bit 7
Reserved
RW
0
Bit 6
ASYNC1
RW
0
Bit 5
ASYNC0
RW
0
Bit 4
Reserved
RW
0
Bit 3
WDTCtrl
Watch Dog Time base
Control
RW
0
Bit 2
WD2
WD Timer Bit 2
RW
1
Bit 1
WD1
WD Timer Bit 1
RW
1
Bit 0
WD0
WD Timer Bit 0
RW
1
Fix PLL Async Freq
Programming bits
See Table 2: Asynchronous Frequency
Selection Table
-
Type
Name
PWD
Byte 9
Pin #
Name
-
PWD
Byte 8
Pin #
-
Byte Count
Programming b(7:0)
-
Control Function
0
1
01
Reserved
These bits represent X*290ms (or 1.16S)
the watchdog timer waits before it goes to
alarm mode. Default is 7 X 290ms = 2s.
290ms Base
-
1160ms Base
Writing to this register will configure how
many bytes will be read back, default is
0F = 15 bytes.
I
2C Table: VCO Control Select Bit & WD Timer Control Register
Bit 7
M/NEN
M/N Programming
Enable
RW
0
Bit 6
WDEN
Watchdog Enable
RW
0
Bit 5
WDStatus
WD Alarm Status
R
0
Bit 4
WD SF4
RW
0
Bit 3
WD SF3
RW
0
Bit 2
WD SF2
RW
0
Bit 1
WD SF1
RW
0
Bit 0
WD SF0
RW
0
PWD
Type
Byte 10
Pin #
Control Function
Name
-
Watch Dog Safe Freq
Programming bits
-
01
Writing to these bit will configure the safe
frequency as Byte0 bit (4:0).
Disable
Normal
Alarm
Enable
Table 2: Asynchronous Frequency Selection Table
B9 bit6
B9 bit5
SRC
ZCLK
AGP
PCI
0
Main PLL Main PLL Main PLL
Main PLL
0
1
100
133.33
66.66
33.33
1
0
100
150.00
75
37.5
1
100
133.33
80
40
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