CMX138 CML Microcircuits, CMX138 Datasheet - Page 55

• Manufacturer Part Number: CMX138
• Description: Audio Scrambler and Sub-Audio Signalling Processor
• Manufacturer: CML Microcircuits

Audio Scrambler and Sub-Audio Signalling Processor
9.2.4
This block is divided into two sub-blocks to facilitate loading the RAMDAC buffer. Set bit 15 to restart a
loading sequence. If bit 10 is set then loading the first ten locations will be skipped. If bit 10 is clear, the
first ten locations must be loaded before continuing to the RAMDAC load.
The Internal clk dividers only require modification if a non-standard XTAL frequency is used (see Table 1).
Default Values:
© 2008 CML Microsystems Plc
P3.10
P3.11
P3.12
P3.74
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
P3.8
P3.9
Bit:
Program Block 3 – AuxDAC, RAMDAC and Clock control:
15
09A
20C
1
0
0
0
0
0
0
0
0
0
0
1
0
0
000
376
16
32
48
0
14
0AD
1
1
1
1
1
1
1
1
1
1
1
1
1
1
001
226
387
17
33
49
1
P3.0
P3.1
P3.2 - P3.7:
P3.8
P3.9
P3.10
P3.11 - P3.74:
13
0C1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
003
23F
397
18
34
50
2
12
0D5
006
258
3A6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
19
35
51
3
11
0EA
00A
3B4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
271
20
36
52
4
Default DAC RAM contents after reset (hexadecimal)
10
Table 8 RAMDAC Values
28A
3C1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
010
100
21
37
53
5
$000
$000
see Table 1
$000 - do not change this value
$101 - do not change this value
$002 - do not change this value
see Table 8
3CC
2A2
9
017
116
22
38
54
6
Page 55
VCO output and AUX clk divide in Rx or Tx mode
12D
2BA
3D7
8
01F
Internal ADC / DAC clk divide in Rx or Tx mode
23
39
55
7
VCO output and AUX clk divide in IDLE mode
2D2
3E0
7
028
145
24
40
56
8
PLL clk divide in Rx or Tx mode
User Defined RAMDAC data 63
User Defined RAMDAC data xx
Ref clk divide in Rx or Tx mode
User Defined RAMDAC data 0
GP Timer value in IDLE mode
AuxADC Internal Control 1
AuxADC Internal Control 2
AuxADC Internal Control 3
AuxADC Average Counter
Reserved – set to 000
15D
2E9
3E8
6
033
25
41
57
9
03E
2FF
3EF
5
175
10
26
42
58
04B
18E
4
315
3F5
11
27
43
59
32A
3
059
1A7
3F9
44
12
28
60
1C0
3FC
33E
2
068
13
29
45
61
D/138_FI1.0/5
1D9
3FE
1
078
352
14
30
46
62
CMX138
3FF
0
089
1F3
365
15
31
47
63