参数资料
型号: MPC9331AC
厂商: IDT, Integrated Device Technology Inc
文件页数: 8/13页
文件大小: 0K
描述: IC PLL CLOCK GEN 1:6 32-LQFP
标准包装: 250
类型: PLL 时钟发生器
PLL: 带旁路
输入: LVCMOS,LVPECL
输出: LVCMOS
电路数: 1
比率 - 输入:输出: 2:6
差分 - 输入:输出: 是/无
频率 - 最大: 240MHz
除法器/乘法器: 是/是
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 32-LQFP
供应商设备封装: 32-TQFP(7x7)
包装: 托盘
MPC9331 REVISION 7 JANUARY 31, 2013
4
2012 Integrated Device Technology, Inc.
MPC9331 Data Sheet
3.3 V 1:6 LVCMOS PLL CLOCK GENERATOR
Table 2. Function Table
Control
Default
0
1
REF_SEL
0
PCLK is the PLL reference clock
CCLK is the PLL reference clock
FB_SEL
1
Internal PLL feedback of 8. fVCO = 8 * fref
External feedback. Zero-delay operation
enabled for CCLK or PCLK as reference
clock
PLL_EN
1
Test mode with PLL disabled. The reference clock is
substituted for the internal VCO output. MPC9331 is fully static
and no minimum frequency limit applies. All PLL related AC
characteristics are not applicable.
Normal operation mode with PLL enabled.
PWR_DN
1
VCO
1 (High output frequency range)
VCO
2 (Low output frequency range)
FSELA
0
Output divider
2
Output divider
4
FSELB
0
Output divider
2
Output divider
4
FSELC
0
Output divider
4
Output divider
6
OE/MR
1
Outputs disabled (high-impedance state) and reset of the
device. During reset in external feedback configuration, the
PLL feedback loop is open. The VCO is tied to its lowest
frequency. The MPC9331 requires reset after any loss of PLL
lock. Loss of PLL lock may occur when the external feedback
path is interrupted. The length of the reset pulse should be
greater than one reference clock cycle (CCLK or PCLK). Reset
does not affect PLL lock in internal feedback configuration.
Outputs enabled (active)
CLK_STOP[0:1]
11
PWR_DN, FSELA, FSELB and FSELC control the operating PLL frequency range and input/output frequency ratios.
See Table 8 through Table 10 for supported frequency ranges and output to input frequency ratios.
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