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CMX148 Datasheet(PDF) 59 Page - CML Microcircuits

Part # CMX148
Description  Programmable Voice Scrambler
PDF  75 Pages
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Manufacturer  CMLMICRO [CML Microcircuits]
Direct Link  http://www.cmlmicro.com
Logo CMLMICRO - CML Microcircuits

CMX148 Datasheet(HTML) 59 Page - CML Microcircuits

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PMR Audio and Data Processor
CMX148
© 2010 CML Microsystems Plc
59
D/148/6
8.2.4.
Program Block 3 – AuxDAC, RAMDAC and Clock Control
This block is divided into two sections to facilitate loading the RAMDAC buffer. Set bit 15 to 1 and clear bit
10 to 0 to start the loading sequence from P3.0. Set both bits 15 and 10 to start the loading sequence
from P3.11 (RAMDAC data).
The Internal clk dividers only require modification if a non-standard XTAL frequency is used (see Table 1 )
Bit:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
P3.0
1
1
1
1
0
0
0
0
AuxADC1 Average Counter
P3.1
0
1
1
1
0
0
0
0
reserved
P3.2
0
1
1
1
GP Timer value in IDLE mode
P3.3
0
1
1
1
VCO output and AUX clk divide in IDLE mode
P3.4
0
1
1
1
Ref clk divide in Rx or Tx mode
P3.5
0
1
1
1
PLL clk divide in Rx or Tx mode
P3.6
0
1
1
1
VCO output and AUX clk divide in Rx or Tx mode
P3.7
0
1
1
1
0
0
0
0
Internal ADC / DAC clk divide in Rx or Tx mode
P3.8
0
1
1
1
0
0
0
0
ADC Internal Control 1
P3.9
0
1
1
1
0
0
0
0
ADC Internal Control 2
P3.10
0
1
1
1
0
0
0
0
0
0
0
0
ADC Internal Control 3
P3.11
1
1
1
1
0
1
User Defined RAMDAC data 0
P3.xx
0
1
1
1
0
1
User Defined RAMDAC data xx
P3.74
0
1
1
1
0
1
User Defined RAMDAC data 63
Default Values:
P3.0
$F000
P3.1
$7000
P3.2 - P3.7:
see Table 1
P3.8
$7000
P3.9
$7101
P3.10
$7002
P3.11 - P3.74:
see Table 9
Table 9 RAMDAC Values
Default RAMDAC Contents After Reset (hex)
0
000
1
001
2
003
3
006
4
00A
5
010
6
017
7
01F
8
028
9
033
10
03E
11
04B
12
059
13
068
14
078
15
089
16
09A
17
0AD
18
0C1
19
0D5
20
0EA
21
100
22
116
23
12D
24
145
25
15D
26
175
27
18E
28
1A7
29
1C0
30
1D9
31
1F3
32
20C
33
226
34
23F
35
258
36
271
37
28A
38
2A2
39
2BA
40
2D2
41
2E9
42
2FF
43
315
44
32A
45
33E
46
352
47
365
48
376
49
387
50
397
51
3A6
52
3B4
53
3C1
54
3CC
55
3D7
56
3E0
57
3E8
58
3EF
59
3F5
60
3F9
61
3FC
62
3FE
63
3FF



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