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参数资料
| 型号： | MAS3507D |
| 厂商： | MICRONAS SEMICONDUCTOR HOLDING AG |
| 元件分类： | 通用总线功能 |
| 英文描述： | MPEG 1/2 Layer 2/3 Audio Decoder |
| 中文描述： | 的MPEG 1 / 2 2 / 3层音频解码器 |
| 文件页数： | 26/60页 |
| 文件大小： | 867K |
| 代理商： | MAS3507D |
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MAS 3507D
PRELIMINARY DATA SHEET
26
Micronas
3.6. Register Table
In Table 3–6, the internal registers that are useful for
controlling the MAS 3507D are listed. They are acces-
sible by ‘register read/write’ I
2
C commands (see Sec-
tion 3.3. on page 20).
Important note!
Writing into undocumented registers
or read-only registers is always possible, but it is highly
recommended not to do so. It may damage the func-
tion of the firmware and may even lead to a complete
system crash of the decoder operation which can only
be restored by a reset.
3.6.1. DC/DC Converter
The DCCF Register controls both the internal voltage
monitor and DC/DC converter. Between output voltage
of the DC/DC converter and the internal voltage moni-
tor threshold an offset exists which is shown in the fol-
lowing table. Please pay attention to the fact, that I
2
C
protocol is working only if the processor is active
(WSEN = 1). However, the setting for the DCCF regis-
ter will remain active if the DCEN and WSEN lines are
deasserted
Table 3–6:
Command Register Table
Address
R/W
Name
Comment
Default
$8e
w
DCCF
Set DC/DC converter mode
(see Table 3–7 on page 27)
$08000
$aa
r/w
Mute / Bypass
Tone Control
Forces a mute of the digital output
bypass Bass / Treble / Volume matrix
$0
$ed
1)
r
PIOData
Read back the PIO pin levels. The PI0 pin corresponds to bit
0 in the PIOData register.
This register can be used to detect the actual state of the
PIO pins, regardless of the PIO configuration.
$e6
r/w
StartupConfig
Shadows the start-up configuration set via PIO pins or I
2
C
command (valid are bits 8, 4...0 as described in Table 2–8.
$e7
r/w
KPrescale
responsible for prescale of the tone filter (prevent overflows)
(see Section 3.6.3. on page 28)
$80000
$6b
r/w
KBass
responsible for increase / decrease of low frequencies
(see Section 3.6.3. on page 28)
$0
$6f
r/w
KTreble
responsible for increase / decrease of high frequencies
(see Section 3.6.3. on page 28)
$0
1) In order to get the right information of the PIO pin levels (except for PI19, Demand Pin), register $ed should be
read and evaluated. However, the Demand Pin PI19 is shadowed in bit 19 of register $c8.
相关PDF资料 |
PDF描述 |
|---|---|
| MAS3559F | MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS35x9F | MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS3509F | MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS3519F | MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS3529F | MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAS3509F | 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS3519F | 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS3529F | 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS3539F | 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
| MAS3549F | 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec |
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