参数资料
| 型号： | W158HT |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK CK98 SSCG CK98 56SSOP |
| 标准包装： | 1,000 |
| 类型： | * |
| PLL： | 带旁路 |
| 输入： | 晶体 |
| 输出： | 时钟 |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:24 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 133MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 2.375 V ~ 3.465 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
W158
..... Document #: 38-07164 Rev. *A Page Page 4 of 12 of 12
Mode Selection Functions
The W158 supports the following operating modes controlled through the SEL133/100#, SEL0, and SEL1 inputs.
Notes:
2. Provided for board level “bed of nails” testing.
3. 48-MHz PLL disabled to reduce component jitter.
4. Normal” mode of operation.
5. TCLK is a test clock over driven on the X1 input during test mode. TCLK mode is based on 133-MHz CPU select logic.
6. Required for DC output impedance verification.
7. Range of reference frequency is min.=14.316, nominal = 14.31818 MHz, max.=14.32 MHz.
8. Frequency accuracy of 48 MHz is +167 PPM to match USB default.
Table 2. Select Functions
SEL133/100#
SEL1
SEL0
Function
0
All Outputs Three-State
0
1
(Reserved)
0
1
0
Active 100-MHz, 48-MHz PLL Inactive
0
1
Active 100-MHz, 48-MHz PLL Active
1
0
Test Mode
1
0
1
(Reserved)
1
0
Active 133-MHz, 48-MHz PLL Inactive
1
Active 133-MHz, 48-MHz PLL Active
Table 3. Truth Table
SEL
133/100#
SEL1
SEL0
CPU
CPUdiv2
3V66
PCI
48MHz
REF
IOAPIC
Notes
0
HI-Z
2
0
1
n/a
0
1
0
100 MHz
50 MHz
66 MHz
33 MHz
HI-Z
14.318 MHz 16.67 MHz
3
0
1
100 MHz
50 MHz
66 MHz
33 MHz
48 MHz
14.318 MHz 16.67 MHz
4, 7, 8
1
0
TCLK/2
TCLK/4
TCLK/8
TCLK/2
TCLK
TCLK16
5, 6
1
0
1
n/a
1
0
133 MHz
66 MHz
33 MHz
HI-Z
14.318 MHz 16.67 MHz
3
1
133 MHz
66 MHz
33 MHz
48 MHz
14.318 MHz 16.67 MHz
4, 7, 8
Table 4. Maximum Supply Current
Condition
Max. 2.5V supply consumption
Max. discrete cap loads,
VDDQ2=2.625V
All static inputs=VDDQ3 or GND
Max. 3.3V supply consumption
Max. discrete cap loads,
VDDQ3=3.465V or GND
Powerdown Mode
(PWRDWN#=0)
100 A
200 A
Full Active 100 MHz
SEL133/100#=0
SEL1, 0=11
CPU_STOP#, PCI_STOP#=1
75 mA
160 mA
Full Active 133 MHz
SEL133/100#=0
SEL1, 0=11
CPU_STOP#, PCI_STOP#=1
90 mA
160 mA
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