21 I
2
S
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
21-23
The table below is made from Equitation 2 (eq2) using Excel.
8.4 List of Sample Clock Frequencies
Table 21.
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
1
SysClk
[kHz]
BCLKDIV[7:0]
WSCLKCYC[4:0]
2
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3
33000
0
515.63 485.29 458.33 434.21 412.50 392.86 375.00 358.70 343.75 330.00 317.31 305.56 294.64 284.48 275.00 266.13 257.81
4
1
257.81 242.65 229.17 217.11 206.25 196.43 187.50 179.35 171.88 165.00 158.65 152.78 147.32 142.24 137.50 133.06 128.91
5
2
171.88 161.76 152.78 144.74 137.50 130.95 125.00 119.57 114.58 110.00 105.77 101.85 98.21 94.83 91.67 88.71 85.94
6
3
128.91 121.32 114.58 108.55 103.13 98.21 93.75 89.67 85.94 82.50 79.33 76.39 73.66 71.12 68.75 66.53 64.45
7
4
103.13 97.06 91.67 86.84 82.50 78.57 75.00 71.74 68.75 66.00 63.46 61.11 58.93 56.90 55.00 53.23 51.56
8
5
85.94 80.88 76.39 72.37 68.75 65.48 62.50 59.78 57.29 55.00 52.88 50.93 49.11 47.41 45.83 44.35 42.97
9
6
73.66 69.33 65.48 62.03 58.93 56.12 53.57 51.24 49.11 47.14 45.33 43.65 42.09 40.64 39.29 38.02 36.83
10
7
64.45 60.66 57.29 54.28 51.56 49.11 46.88 44.84 42.97 41.25 39.66 38.19 36.83 35.56 34.38 33.27 32.23
11
8
57.29 53.92 50.93 48.25 45.83 43.65 41.67 39.86 38.19 36.67 35.26 33.95 32.74 31.61 30.56 29.57 28.65
12
9
51.56 48.53 45.83 43.42 41.25 39.29 37.50 35.87 34.38 33.00 31.73 30.56 29.46 28.45 27.50 26.61 25.78
13
10
46.88 44.12 41.67 39.47 37.50 35.71 34.09 32.61 31.25 30.00 28.85 27.78 26.79 25.86 25.00 24.19 23.44
14
11
42.97 40.44 38.19 36.18 34.38 32.74 31.25 29.89 28.65 27.50 26.44 25.46 24.55 23.71 22.92 22.18 21.48
15
12
39.66 37.33 35.26 33.40 31.73 30.22 28.85 27.59 26.44 25.38 24.41 23.50 22.66 21.88 21.15 20.47 19.83
16
13
36.83 34.66 32.74 31.02 29.46 28.06 26.79 25.62 24.55 23.57 22.66 21.83 21.05 20.32 19.64 19.01 18.42
17
14
34.38 32.35 30.56 28.95 27.50 26.19 25.00 23.91 22.92 22.00 21.15 20.37 19.64 18.97 18.33 17.74 17.19
18
15
32.23 30.33 28.65 27.14 25.78 24.55 23.44 22.42 21.48 20.63 19.83 19.10 18.42 17.78 17.19 16.63 16.11
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
257
254
2.02
1.90
1.80
1.70
1.62
1.54
1.47
1.41
1.35
1.29
1.24
1.20
1.16
1.12
1.08
1.04
1.01
258
255
2.01
1.90
1.79
1.70
1.61
1.53
1.46
1.40
1.34
1.29
1.24
1.19 1.15
1.11
1.07
1.04
1.01
Cell [A3]:
System clock frequency (33000 kHz)
Cells [B3:B258]: BCLKDIV[7:0] settings (0 to 255)
Cells [C2:S2]:
WSCLKCYC[4:0] settings (0 to 16)
Cells [C3:S258]: f
I2S_WS
calculated by Equation 2 (eq2) according to the BCLKDIV[7:0] and WSCLKCYC[4:0] settings
Cell [C3] = $A$3/(($B3+1)*2*(C$2+16)*2)
Cell [S3] = $A$3/(($B3+1)*2*(S$2+16)*2)
:
:
Cell [C258] = $A$3/(($B258+1)*2*(C$2+16)*2)
Cell [S258] = $A$3/(($B258+1)*2*(S$2+16)*2)
If you use another system clock frequency, enter the frequency in kHz to Cell [A3]. Cells [C3:S258] will be cor-
rected according to the entered value.
Find “44.1 (kHz)” or an approximate value from the table. You may choose “44.12” in Cell [D13].
You may get the BCLKDIV[7:0] and WSCLKCYC[4:0] values as 10 and 1, respectively.
Substituting these values in Equation 3 (eq3) yields the MCLKDIV[5:0] values.
(
10
+ 1) × 2 × (
1
+ 16) × 2
————— ——————— = Integer
MCLKDIV[5:0] + 1
The table below is made from Equitation 3 (eq3) using Excel.
8.5 MCLKDIV[5:0] Valid Values
Table 21.
U
V
1
BCLKDIV[7:0]
WSCLKCYC[4:0]
2
10
1
3
4
MCLKDIV[5:0]
Results
5
0
Integer
6
1
Integer
7
2
–
8
3
Integer
9
4
–
:
:
–
15
10
Integer
:
:
–
21
16
Integer
:
:
–
26
21
Integer
:
:
–
38
33
Integer
:
:
–
48
43
Integer
:
:
–
68
63
–