參數(shù)資料
型號(hào)： M37640E8FP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁數(shù)： 76/96頁
文件大?。?/td> 1477K
代理商： M37640E8FP
76
Ver 1.4
MITSUBISHI MICROCOMPUTERS
7640 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 1.94. Frequency Synthesizer Multiply Control Register (FSM1)
Fig. 1.95. Frequency Synthesizer Multiply Control Register (FSM2)
Fig. 1.96. Frequency Synthesizer divided Ratio Register (FSD)
Address: 006D
16
Access: R/W
Reset: FF
16
Bit 0-7
Frequency synthesizer multiply value, n, that is used to multiply the prescaler
output frequency, f
PIN
, up to 48.00 MHz
Bit 7
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MSB
7
LSB
0
Bit 6
f
VCO
= 2 x f
PIN
x (n+1)
f
VCO
n
10
f
PIN
n
16
FSM1
48.00 MHz
48.00 MHz
48.00 MHz
48.00 MHz
48.00 MHz
48.00 MHz
320.00 KHz
2.00 MHz
0
4.00 MHz
6.00 MHz
12.00 MHz
24.00 MHz
74
11
5
3
1
4A
0B
05
03
01
00
Address: 006E
16
Access: R/W
Reset: FF
16
Bit 0-7
Frequency synthesizer prescaler divide value, n. The input clock, f
, is
divided by this value to produce the intermediate frequency, f
, which is
then multiplied up to 48.00 MHz. A value of 255 (FF
16
) turns the prescaler
off (no division of f
IN
).
Bit 7
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MSB
7
LSB
0
Bit 6
f
PIN
= f
IN
/ (2 x (n+1))
f
PIN
n
10
f
IN
n
16
FSM2
24.00 MHz
1.00 MHz
2.00 MHz
3.00 MHz
6.00 MHz
12.00 MHz
24.00 MHz
24.00 MHz
0
24.00 MHz
24.00 MHz
24.00 MHz
24.00 MHz
255
11
5
3
1
FF
0B
05
03
01
00
Address: 006F
16
Access: R/W
Reset: FF
16
Bit 0-7
Frequency synthesizer divide value, m, by which the 48.00 MHz VCO
frequency is divided to produce the F
SYN
system clock frequency.
Bit 7
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MSB
7
LSB
0
Bit 6
f
SYN
= f
VCO
/ (2 x (m+1))
f
SYN
m
10
f
VCO
m
16
FSD
24.00 MHz
8.00 MHz
4.00 KHz
187.50 KHz
93.75 KHz
0.00 KHz
48.00 MHz
48.00 MHz
255
48.00 MHz
48.00 MHz
48.00 MHz
48.00 MHz
0
2
5
127
128
00
02
05
7F
80
FF
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