參數(shù)資料
型號(hào): 115-T-7121TPA
廠商: Hynix Semiconductor Inc.
英文描述: Digital Satellite Network Interface Module
中文描述: 數(shù)字衛(wèi)星網(wǎng)絡(luò)接口模塊
文件頁(yè)數(shù): 5/12頁(yè)
文件大?。?/td> 189K
代理商: 115-T-7121TPA
Page 5 of
12
Digital Satellite NIM Specification 1.2
Feb. 2001
3.3 Write Registers
MSB
LSB
Prog. divider
Byte1
0
N14
N13
N12
N11
N10
N9
N8
A
Prog. divider
Byte2
N7
N6
N5
N4
N3
N2
N1
N0
A
Control data
Byte3
1
T2
T1
T0
R3
R2
R1
R0
A
Control data
Byte4
C1
C0
RE
RS
P3
P2
P1
P0
A
A: Acknowledge bit
N14~N0: Programmable divider bits
N = N14
×
2
14
+ N13
×
2
13
+ …+N1
×
2
1
+N0
R3,R2,R1,R0: Reference Division Ratio(See Table 1)
C0,C1: Charge pump current(See Table 2)
RE, RS: Not used, for normal operation RE=0 and RS=don’t care
T2,T1,T0: Test mode control, for normal operation T2=0 and T1=T0=don’t care
P3,P2,P1,P0: Port output states, for normal operation P3=P2=P0=don’t care, P1 is used for switcing local
oscillator, i.e. if f
LO
< 1500MHz then P1=1, else P1=0
Table 1 Reference Division Ratio (4MHz external reference)
R3
R2
R1
R0
Ratio
Comparison frequency
0
0
0
0
2
2MHz
0
0
0
1
4
1MHz
0
0
1
0
8
500KHz
0
0
1
1
16
250KHz
0
1
0
0
32
125KHz
0
1
0
1
64
62.5KHz
0
1
1
0
128
31.25KHz
0
1
1
1
256
15.62KHz
1
0
0
0
24
166.67KHz
1
0
0
1
5
800KHz
1
0
1
0
10
400KHz
1
0
1
1
20
200KHz
1
1
0
0
40
100KHz
1
1
0
1
80
50KHz
1
1
1
0
160
25KHz
1
1
1
1
320
12.5KHz
* Recommended, 125KHz
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