27-8
MB86R02 ‘Jade-D’ Hardware Manual V1.64
27.6.5 I2SxCNTREG register
Address
ch0
:
FFEE_0008 (h)
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Name
CKRT
OVHD
R/W
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
–
MSKB MSMD SBFN RHLL ECKM BEXT FRUN MLSB TXDIS RXDIS SMPL CPOL FSPH FSLN FSPL
R/W
R
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
Bit field
Description
No.
Name
31-26
CKRT[5:0]
This sets output clock frequency dividing ratio at master operation.
AHB clock is divided at ECKM = 0, and external clock is divided at ECKM = 1. Only
even number of the ratio is supported and output clock's DUTY becomes 50%. CKRT
[5:0]
×
2 becomes number of AHB clock or external clock cycle included in 1 cycle
(I2S_SCKx.)
Setting examples are shown below.
External clock mode and external clock are 24.576MHz:
CKRT
Dividing
ratio
I2S_SCKx
0x00
By pass
24.576MHz
(external clock is output as it is)
0x01
1/2
12.288MHz
0x02
1/4
6.144MHz
0x03
1/6
4.096MHz
0x04
1/8
3.072MHz
0x05
1/10
2.458MHz
:
:
:
Internal clock mode and AHB clock are 80MHz:
CKRT
Dividing
ratio
I2S_SCKx
:
:
:
0x04
1/8
10MHz
0x05
1/10
8MHz
0x06
1/12
6.67MHz
0x07
1/14
5,71MHz
0x08
1/16
5MHz
0x09
1/18
4.44MHz
:
:
:
25-16
OVHD[9:0]
Frame rate is able to be adjusted by inserting OVHD bit following to valid data of the
frame. OVHD section of the transmission frame becomes in high impedance. Up to 0
– 1023 OVHD bit is able to be inserted, and is inserted at the end of the frame.
The value set to OVHD becomes the number of insertion bit.
The following expressions are formed for OVHD and frame synchronous signal cycle
(2nd.)
1 sub frame construction:
OVHD = Frame synchronous signal cycle/I2S_SCKx cycle – (S0CHL + 1)
×
(S0CHN + 1)
2 sub frame construction:
OVHD = Frame synchronous signal cycle/I2S_SCKx cycle – (S0CHL + 1)
×
(S0CHN + 1)
– (S1CHL + 1)
×
(S1CHN + 1)
Содержание MB86R02
Страница 24: ...MB86R02 Jade D Hardware Manual V1 64 ...
Страница 76: ...3 2 MB86R02 Jade D Hardware Manual V1 64 Figure 3 1 Memory map 1 ...
Страница 77: ...3 3 MB86R02 Jade D Hardware Manual V1 64 Figure 3 2 Memory map 2 ...
Страница 167: ...8 8 MB86R02 Jade D Hardware Manual V1 64 ...
Страница 214: ...11 7 MB86R02 Jade D Hardware Manual V1 64 15 16 cycles initial value ...
Страница 216: ...11 9 MB86R02 Jade D Hardware Manual V1 64 0000011 b 4MB 0111111 b 64MB 0000111 b 8MB 1111111 b 128MB ...
Страница 304: ...16 5 MB86R02 Jade D Hardware Manual V1 64 The flow of a read action is shown below Figure 16 5 Read process flow ...
Страница 497: ...18 139 MB86R02 Jade D Hardware Manual V1 64 VSYNC is output 1 dot clock faster than HSYNC ...
Страница 558: ...18 200 MB86R02 Jade D Hardware Manual V1 64 017 S S S S S S S S Int Frac 060 018 dBdy S S S S S S S S Int Frac ...
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Страница 682: ...22 2 MB86R02 Jade D Hardware Manual V1 00 FUJITSU PROPRIETARY AND CONFIDENTIAL ...
Страница 684: ...22 2 MB86R02 Jade D Hardware Manual V1 00 FUJITSU PROPRIETARY AND CONFIDENTIAL Figure 22 14 TCON flow diagram ...
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Страница 852: ...34 13 MB86R02 Jade D Hardware Manual V1 64 3 1LSB VFST VZT 1022 INLn 1LSBxn VZT Vn 1LSB DNLn Vn 1 Vn 1LSB 1 ...
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