BT8954 CONEXANT [Conexant Systems, Inc], BT8954 Datasheet - Page 49

• Manufacturer Part Number: BT8954
• Description: VOICE PAIR GAIN FRAMER
• Manufacturer: CONEXANT [Conexant Systems, Inc]

Bt8954
Voice Pair Gain Framer
Table 3-8. Factors for f
N8954DSC
N
2
4
6
8
N x 64
(kbps)
128
256
384
512
Bit Rate (kHz)
Non-Payload
PLL
16
32
40
64
72
16
32
40
64
72
16
32
40
64
72
16
32
40
64
72
8
8
8
8
= 196.608 MHz (1 of 2)
200 MHz. Therefore, f
factors that synthesize different frequencies for f
possible configurations are illustrated.
f
PLL
Ideally, the Voltage Crystal Oscillator (VCO) should be operated around
Table 3-9
f
B
= 204.800 MHz.
136
144
160
168
192
200
264
272
288
296
320
328
392
400
416
424
448
456
520
528
544
552
576
584
(kHz)
lists the various factors that synthesize different frequencies for
f
H
10.240
10.496
12.544
12.800
13.312
13.568
14.336
14.592
16.640
16.896
17.408
17.664
18.432
18.688
4.352
4.608
5.120
5.376
6.144
6.400
8.448
8.704
9.216
9.472
(MHz)
Conexant
GCLK
f
H
is approximately 50 MHz.
/f
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
REF
f
REF
10.240
10.496
12.544
12.800
13.312
13.568
14.336
14.592
16.640
16.896
17.408
17.664
18.432
18.688
4.352
4.608
5.120
5.376
6.144
6.400
8.448
8.704
9.216
9.472
(MHz)
PLL
INT
45
42
38
36
32
30
23
22
21
20
19
18
15
15
14
14
13
13
11
11
11
11
10
10
= 196.608 MHz. Not all
Table 3-8
3.0 Circuit Descriptions
11565
43690
26214
37449
47185
17873
38550
21845
49594
13107
47953
44136
23592
50412
32149
46811
31043
53437
41704
19275
43690
34114
FRAC
8548
0
lists the various
23/25
10/17
30/37
24/49
24/25
39/53
46/73
3/17
5/11
7/41
4/13
7/19
3/65
8/11
5/17
4/23
A/B
2/3
2/5
1/7
0/1
1/3
1/5
3/7
2/3
3.9 PLL
3-27