参数资料
型号: ICS1562BM-201LFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 19/20页
文件大小: 0K
描述: IC VIDEO CLK SYNTHESIZER 16-SOIC
标准包装: 2,500
类型: 时钟/频率合成器,时钟发生器,扇出配送
PLL:
输入: CMOS,TTL,晶体
输出: CMOS,PECL
电路数: 1
比率 - 输入:输出: 1:3
差分 - 输入:输出: 无/是
频率 - 最大: 260MHz
除法器/乘法器: 是/是
电源电压: 4.75 V ~ 5.25 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
其它名称: 1562BM-201LFT
Register Mapping - ICS1562B-001 (Parallel Programming Option)
NOTE: IT IS NOT NECESSARY TO UNDERSTAND THE FUNCTION OF THESE BITS TO USE THE ICS1562B. PC SOFTWARE IS AVAILABLE
FROM ICS TO AUTOMATICALLY GENERATE ALL REGISTER VALUES BASED ON REQUIREMENTS. CONTACT FACTORY FOR DETAILS.
REG#
BIT(S)
BIT REF.
DESCRIPTION
0
0-3
R[0]..R[3]
Reference divider modulus control bits
1
0-2
R[4]..R[6]
Modulus = value + 1
1
3
REFPOL
PLL locks to the rising edge of XTAL1 input when REFPOL=1 and
to the falling edge of XTAL1 when REFPOL=0.
2
0-3
A[0]..A[3]
Controls A counter. When set to zero, modulus=7. Otherwise,
modulus=7 for “value” underflows of the prescaler, and modulus=6
thereafter until M counter underflows.
3
0-3
M[0]..M[3]
M counter control bits
4
0-1
M[4]..M[5]
Modulus = value + 1
4
2
FBKPOL
External feedback polarity control bit. The PLL will lock to the falling
edge of EXTFBK when FBKPOL=1 and to the rising edge of
EXTFBK when FBKPOL=0.
4
3
DBLFREQ
Doubles modulus of dual-modulus prescaler (from 6/7 to 12/14).
5
0-3
N1[0]..N1[3]
Sets N1 modulus according to this table. These bits are set to imple-
ment a divide-by-four on power-up.
N1[3]
N1[2]
N1[1]
N1[0]
RATIO
00003
00014
00104
00115
01006
01018
01108
0111
10
1X
0
12
1X
0
1
16
1X
1
0
16
1X
1
20
X=Don’t Care
ICS1562B
8
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