參數(shù)資料
型號： 9EPRS488CKLFT
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 微控制器/微處理器
英文描述： SPECIALTY MICROPROCESSOR CIRCUIT, PQCC72
封裝： ROHS COMPLIANT, PLASTIC, MLF-72
文件頁數(shù)： 8/22頁
文件大小： 266K
代理商： 9EPRS488CKLFT
16
Integrated
Circuit
Systems, Inc.
ICS9EPRS488
Datasheet
1616—08/20/09
SMBus Table: SB_SRC Frequency Control Register
Byte
4
Name
Control Function
Type
0
1
Default
Bit 7
S3
RW
0
Bit 6
S2
RW
0
Bit 5
S1
RW
0
Bit 4
S0
RW
0
Bit 3
SB_SRC_FS3
SB_SRC Frequency Select
RW
1
Bit 2
SB_SRC_FS2
SB_SRC Frequency Select
RW
1
Bit 1
SB_SRC_FS1
SB_SRC Frequency Select
RW
1
Bit 0
SB_SRC_FS0
SB_SRC Freq. Select LSB
RW
1
SMBus Table: 27MHz Slew Rate Control Register
Byte
5
Name
Control Function
Type
0
1
Default
Bit 7
1
Bit 6
1
Bit 5
1
Bit 4
1
Bit 3
SB_SRC Source
SB_SRC Source Selection
RW
SB_SRC PLL
SRC PLL
1
Bit 2
0
Bit 1
0
Bit 0
0
SMBus Table: I/O Vout Control Register
Byte
6
Name
Control Function
Type
0
1
Default
Bit 7
SRC Diff AMP
RW
00 = 700mV
01 = 800mV
0
Bit 6
SRC Diff AMP
RW
10 = 900mV
11 = 1000mV
1
Bit 5
CPU Diff AMP
RW
00 = 700mV
01 = 800mV
0
Bit 4
CPU Diff AMP
RW
10 = 900mV
11 = 1000mV
1
Bit 3
SB_SRC Diff AMP
RW
00 = 700mV
01 = 800mV
0
Bit 2
SB_SRC Diff AMP
RW
10 = 900mV
11 = 1000mV
1
Bit 1
X
Bit 0
X
SMBus Table: Vendor & Revision ID Register
Byte
7
Name
Control Function
Type
0
1
Default
Bit 7
RID3
R
-
0
Bit 6
RID2
R
-
1
Bit 5
RID1
R
-
0
Bit 4
RID0
R
-
0
Bit 3
VID3
R
-
0
Bit 2
VID2
R
-
0
Bit 1
VID1
R
-
0
Bit 0
VID0
R
-
1
REVISION ID
VENDOR ID
Reserved
These bits program the slew rate of the single
ended outputs. The maximum slew rate is
1.9V/ns and the minimum slew rate is 1.1V/ns.
The slew rate selection is as follows:
11 = 1.9V/ns
10 = 1.6V/ns
01 = 1.1V/ns
00 = tristated
27M_NS_Slew Rate
Slew Rate Control
RW
27M_SS_Slew Rate
Slew Rate Control
RW
SRC Differential output
Amplitude Control
SB_SRC Differential output
Amplitude Control
CPU Differential output
Amplitude Control
Reserved
27_SSC
Spread Select
S[1:0]: 00 = -0.5% Default,
01 =1.0%, 10 = -1.5%, 11 = -2%.
See Table 3: 27Mhz_Spread, LCDCLK Spread
and Frequency Selection Table for additional
selections.
Reserved
See SB_SRC Frequency Select Table.
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