参数资料
型号: MK1493-03BGLF
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟产生/分配
英文描述: 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
封装: 6.10 MM, 0.50 MM PITCH, ROHS COMPLIANT, TSSOP-48
文件页数: 12/19页
文件大小: 440K
代理商: MK1493-03BGLF
MK1493-03B
PCI CLOCK GENERATOR
CLOCK SYNTHESIZER
IDT PCI CLOCK GENERATOR
2
MK1493-03B
REV H 051310
Pin Assignment
48-pin TSSOP
Table 1. Frequency Select
1) Each PCI clock is individually selectable.
Table 2. Input Select (FS8, FS9,FS10&FS11)
2) The changes in frequency are step changes.
3) Default Value upon Power up.
Pin Descriptions
21
CLK50M
22
FS6_B
23
FS5_B
24
FS4_B
1
FS3_A
2
FS2_A
3
FS1_A
4
FS0_A
5
GND
6
VDD
7
SCL
8
SDA
9
GND
10
X1 / ICLK
11
X2
12
VDD
13
REF25
14
VDD
15
GND
16
GND
17
VDD
18
CPUCLK
19
CPUCLK
20
FS7_B
28
27
26
25
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
PCICLK2/FS10
PCICLK1/FS9
PCICLK0
PCICLK3
FS4_A
FS5_A
FS6_A
FS7_A
FS0_B
FS1_B
PCICLK7
GND
VDD
PCICLK6
PCICLK5
PCICLK4
FS2_B
VDD
GND
CLK66M/FS8
FS3_B
VDD
GND
CLK66/71/83
FS(0:7)_B
FS(0:7)_A
PCICLK(0:7)* 1 2
00
25 MHz
01
33.3333 MHz
10
50 MHz
11
66.6666 MHz
FS8 (pin 32)
CPUCLK/CPUCLK 2
0
125MHz
1
100MHz3
FS9
(pin 27)
FS10
(pin 28)
CLK66M/71M/83M 2
(pin 33)
00
83.33 MHz3
01
71.42 MHz
10
66.66 MHz
11
OFF
Pin
Number
Pin
Name
Pin
Type
Pin Description
1
FS3_A
Input
Freq select input pin for PCI CLK3 per table 1. Internal pull-up resistor 120K.
2
FS2_A
Input
Freq select input pin for PCI CLK2 per table 1. Internal pull-up resistor 120K.
3
FS1_A
Input
Freq select input pin for PCI CLK1 per table 1. Internal pull-up resistor 120K.
4
FS0_A
Input
Freq select input pin for PCI CLK0 per table 1. Internal pull-up resistor 120K.
5
GND
Power
Connect to ground.
6
VDD
Power
Connect to +3.3 V.
7
SCL
Input
Clock pin for SMBus circuitry, 5 V tolerant.
8
SDA
Input
Data pin for SMBus circuitry, 5 V tolerant.
9
GND
Power
Connect to ground.
10
X1/ICLK
Input
Crystal connection/input clock. Connect to a 25 MHz fundamental mode crystal or clock input.
11
X2
XO
Connect to a 25 MHz fundamental mode crystal or leave open for clock input.
12
VDD
Power
Connect to +3.3 V.
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