参数资料
型号: MAS3587F
厂商: Electronic Theatre Controls, Inc.
元件分类: 通用总线功能
英文描述: MPEG Layer 3 Audio Encoder/Decoder
中文描述: MPEG层3音频编码器/解码器
文件页数: 42/83页
文件大小: 734K
代理商: MAS3587F
MAS 3587F
ADVANCE INFORMATION
42
Micronas
3.4. Audio Codec Access Protocol
The MAS 3587F has 16-bit wide registers for the control of the audio codec. These registers are accessed via the
I
2
C subaddresses codec_write (6C
hex
) and codec_read (6D
hex
).
3.4.1. Write Codec Register
The controller writes the 16-bit value (
d
= d3,d2,d1,d0) into the MAS 3587F codec register (
r
= r3,r2,r1,r0). A list of
registers is given in Table 3
12.
Example: Writing the value 1234
hex
into the codec register with the number 00 1B
hex
:
<DW 6c 00 1b 12 34>
3.4.2. Read Codec Register
Reading the codec registers also needs a set-up for the register address and an additional start condition during the
actual read cycle. A list of registers is given in Table 3
13.
S
DW
A
W
$6C
A
r3,r2
A
P
A
r1,r0
d3,d2
A
A
d1,d0
S
DW
A
W
$6C
A
r3,r2
A
P
A
r1,r0
1) send command
S
DW
A
W
$6D
A
DR
P
A
d3,d2
A
d1,d0
2) get register value
W
N
S
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