参数资料
型号: ICS873995AYLFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 11/20页
文件大小: 0K
描述: IC ZD/MULT/DIVIDER 48-LQFP
标准包装: 1,000
系列: HiPerClockS™
类型: 零延迟,倍增器,除法器
PLL: 带旁路
输入: HCSL,LVDS,LVHSTL,LVPECL,SSTL
输出: LVPECL
电路数: 1
比率 - 输入:输出: 2:6
差分 - 输入:输出: 是/是
频率 - 最大: 640MHz
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: 48-TQFP 裸露焊盘
供应商设备封装: 48-PTQFP-EP(7x7)
包装: 带卷 (TR)
其它名称: 873995AYLFT
CS5550
DS630F1
19
as well as the other defined power states of the
CS5550, are described in Section 4.6).
Refer to Section 5 of the data sheet to see the de-
fault register values for any particular device regis-
ter.
4.5 Serial Port Initialization
It is possible for the serial interface to become un-
synchronized, with respect to the SCLK input. If
this occurs, any attempt to clock valid CS5550
commands into the serial interface will result in ei-
ther no operation or unexpected operation, be-
cause the CS5550 will not interpret the input
command bits correctly. The CS5550’s serial port
must then be re-initialized. To initialize the serial
port, any of the following actions can be performed:
1) Drive (assert) the CS pin low [or if CS pin is al-
ready low, drive the pin high, then back to low].
2) Hardware Reset (drive RESET pin low, for at
least 10 s, then drive back to high).
3) Issue the Serial Port Initialization Sequence,
which is performed by clocking 3 (or more)
SYNC1 command bytes (0xFF) followed by
one SYNC0 command byte (0xFE).
4.6 CS5550 Power States
Active state denotes the operation of CS5550
when the device is fully powered on (not in sleep
state or stand-by state). Performing either of the
following actions will insure that the CS5550 is op-
erating in the active state:
1) Power on the CS5550. (Or if the device is al-
ready powered on, recycle the power.)
2) Software Reset
3) Hardware Reset
In addition to the actions listed above, note that if
the device is in sleep state or in stand-by state, the
action of waking up the device out of sleep state or
stand-by state (by issuing the Power-Up/Halt com-
mand) will also insure that the device is set into ac-
tive state. In order to send the Power-Up/Halt
command to the device, the serial port must be ini-
tialized. Therefore, after applying power to the
CS5550, a hardware reset should always be per-
formed.
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