参数资料
型号: HMC704LP4E
厂商: Hittite Microwave Corporation
文件页数: 26/44页
文件大小: 0K
描述: IC FRACT-N PLL 16BIT 24QFN
标准包装: 1
类型: 整数 N/小数 N 分频
PLL:
输入: CMOS
输出: CMOS
电路数: 1
比率 - 输入:输出: 1:1
差分 - 输入:输出: 是/无
频率 - 最大: 8GHz
除法器/乘法器: 是/无
电源电压: 3.3V,5V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-VQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 标准包装
其它名称: 1127-1066-6
p
ll
s
-
s
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T
5 - 32
HMC704LP4E
v03.1211
8 GHz fractionaL-n PLL
For price, delivery, and to place orders: Hittite Microwave Corporation,20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMc Mode - Serial Port rEaD operation
A typical HMC Mode READ cycle is shown in Figure 37.
a. The Master (host) asserts both sEN (serial Port Enable) and sDI to indicate a READ cycle, followed
by a rising edge sCLK. Note: The Lock Detect (LD) function is usually multiplexed onto the LD_sDO
pin. It is suggested that LD only be considered valid when sEN is low. In fact LD will not toggle until
the first active data bit toggles on LD_sDO, and will be restored immediately after the trailing edge
of the LsB of serial data out as shown in Figure 37.
b. The slave (PLL) reads sDI on the 1st rising edge of sCLK after sEN. sDI high initiates the READ
cycle (RD)
c. Host places the six address bits on the next six falling edges of sCLK, MsB first.
d. slave registers the address bits on the next six rising edges of sCLK (2-7).
e. slave switches from Lock Detect and places the requested 24 data bits on sD_LDO on the next 24
rising edges of sCK (8-31), MsB first .
f.
Host registers the data bits on the next 24 falling edges of sCK (8-31).
g. slave restores Lock Detect on the 32nd rising edge of sCK.
h. sEN is de-asserted on the 32nd falling edge of sCLK.
i.
The 32nd falling edge of sCLK completes the READ cycle.
table 10. SPi HMc Mode - read timing characteristics
Parameter
Conditions
Min.
Typ.
Max.
Units
t1
t2
t3
t4
t5
sEN to sCLK setup time
sDI setup to sCLK time
sCLK to sDI hold time
sEN low duration
sCLK to sDO delay
8
3
20
8.2ns+0.2ns/pF
ns
Figure 37. HMC Mode Serial Port Timing Diagram - READ
sCLK
sDI
sEN
RD
a5
a4
a3
a2
a1
ao
x
LD_sDO
d23
d22
d2
d1
d0
d3
2
3
4
5
6
7
8
29
30
31
32
28
LD (Lock Detect)
LD
t1
t5
t3
t2
t4
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