參數(shù)資料
型號(hào): M66239FP
廠商: Renesas Technology Corp.
英文描述: High Speed Standard Clock Generator With Frequency Synthesizer
中文描述: 高速標(biāo)準(zhǔn)時(shí)鐘發(fā)生器,頻率合成器
文件頁(yè)數(shù): 22/24頁(yè)
文件大小: 312K
代理商: M66239FP
M66239FP
Rev.1.00 Mar 16, 2005 page 7 of 23
Sync. Clock Generation Operation Timing
Trigger Mode 1 (Negative edge operation: MODE = "H")
tsp(CKO)
tss(CKO)
t
Vcc
0V
Vcc
0V
VOH
VOL
VOH
VOL
VOH
VOL
t
tw(TR)
1/fIN
tsp(CKO)
tss(CKO)
tss(PULSE)
PULSE
MCLK
CKOB
CKO
TR
tw(PULSE)
Figure 1 Trigger Mode 1
Trigger Mode 2 (Positive edge operation: MODE = "L")
tsp(CKO)
t
Vcc
0V
Vcc
0V
VOH
VOL
VOH
VOL
VOH
VOL
tw(TR)
1/fIN
tsp(CKO)
PULSE
MCLK
CKOB
CKO
TR
tss(CKO)
tss(PULSE)
tss(CKO)
tw(PULSE)
Figure 2 Trigger Mode 2
Notes: 1. tss (CKO, CKOB and PULSE) equals the sum of input clock "L" width and α.
Value
α refers to internal delay in M66239FP. Under environment where temperature and VCC do not
change, value
α and tss are kept constant approximately.
Dispersion of tss under such conditions is defined as t (synchronizing precision: jitter).
2. Outputs (CKO, CKOB and PULSE) are unknown until twice trigger pulse input TR reaches after power-on.
3. Internal trigger signal is generated by EXOR of TR and MODE signal.
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