參數(shù)資料
型號: HD4702
廠商: Intersil Corporation
英文描述: CMOS Programmable Bit Rate Generator
中文描述: CMOS可編程比特率發(fā)生器
文件頁數(shù): 2/8頁
文件大?。?/td> 80K
代理商: HD4702
2
Truth Table
TRUTH TABLE FOR RATE SELECT INPUTS
(Using 2.4576MHz Crystal)
S
3
S
2
S
1
S
0
OUTPUT RATE (Z)
L
L
L
L
MUX Input (l
M
)
L
L
L
H
MUX Input (l
M
)
L
L
H
L
50 Baud
L
L
H
H
75 Baud
L
H
L
L
134.5 Baud
L
H
L
H
200 Baud
L
H
H
L
600 Baud
L
H
H
H
2400 Baud
H
L
L
L
9600 Baud
H
L
L
H
4800 Baud
H
L
H
L
1800 Baud
H
L
H
H
1200 Baud
H
H
L
L
2400 Baud
H
H
L
H
300 Baud
H
H
H
L
150 Baud
H
H
H
H
110 Baud
NOTE:
1. 19200 Baud by connecting Q
2
to I
M
.
CLOCK MODES AND INITIALIZATION
I
X
E
CP
C
P
OPERATION
H
L
Clocked from I
X
X
L
Clocked from C
P
X
H
H
Continuous Reset
X
L
Reset During First C
P
= High Time
NOTE:
2. Actual output frequency is 16 times the indicated output
rate, assuming a clock frequency of 2.4576MHz.
H
= HIGH Level
L
= LOW Level
X
= Don’t Care
= Clock Pulse
= First HIGH Level Clock Pulse after E
CP
goes LOW
HD-4702/883
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