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參數(shù)資料
| 型號： | STA003 |
| 英文描述： | MPEG 2.5 LAYER III AUDIO DECODER |
| 中文描述： | 2.5第三層的MPEG音頻解碼器 |
| 文件頁數(shù)： | 22/32頁 |
| 文件大小： | 299K |
| 代理商： | STA003 |
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PLLFRAC_L ([7:0])
MSB
b7
PF7
LSB
b0
PF0
b6
PF6
b5
PF5
b4
PF4
b3
PF3
b2
PF2
b1
PF1
PLLFRAC_H ([15:8])
MSB
b7
PF15 PF14 PF13 PF12 PF11 PF10
LSB
b0
PF8
b6
b5
b4
b3
b2
b1
PF9
Address: 0x64 - 0x65
Type: R/W
Software Reset: 0xC8-0x59
Hardware Reset: 0xC8-0x59
The registers are considered logically concate-
nated and contain the fractional values for the
PLL, used to select the internal configuration.
After Reset, the values are NA, and the opera-
tional setting are done when the MPEG synchro-
nisation is achieved.
The following formula describes the relationships
among all the STA003T fractional PLL parame-
ters:
OCLK_Freq
=
1
MFSDF
(
X
)
+
1
MCLK_freq
PLLTL_N
+
1
PLLCTL_M
+
1
+
PLLFRAC
65536
where:
PLLFRAC=256 x FRAC_H + PLLFRAC_L (decimal)
FRAME_CNT_L
MSB
b7
FC7
FRAME_CNT_M
LSB
b0
FC0
b6
FC6
b5
FC5
b4
FC4
b3
FC3
b2
FC2
b1
FC1
MSB
b7
FC15 FC14 FC13 FC12 FC11 FC10
LSB
b0
FC8
b6
b5
b4
b3
b2
b1
FC9
FRAME_CNT_H
MSB
b7
FC23 FC22 FC21 FC20 FC19 FC18 FC17 FC016
LSB
b0
b6
b5
b4
b3
b2
b1
Address: 0x67, 0x68, 0x69
Type: RO
Software Reset: 0x00
Hardware Reset: 0x00
The three registers are considered logically con-
catenated and compose the Global Frame
Counter.
They are updated at every decoded MPEG
Frame. The registers are reset on both hardware
and software reset.
AVERAGE_BITRATE
Address: 0x6A
Type: RO
Software Reset: 0x00
Hardware Reset: 0x00
MSB
b7
AB7
AVERAGE_BITRATE is a read-only register and
it contains the average bitrate of the incoming bit-
stream. The value is rounded with an accuracy of
1 Kbit/sec.
LSB
b0
AB0
b6
AB6
b5
AB5
b4
AB4
b3
AB3
b2
AB2
b1
AB1
SOFTVERSION
Address: 0x71
Type: RO
MSB
b7
SV7
After the STA003T boot, this register contains the
version code of the embedded software.
LSB
b0
SV0
b6
SV6
b5
SV5
b4
SV4
b3
SV3
b2
SV2
b1
SV1
STA003T
22/32
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STA003T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MPEG 2.5 LAYER III AUDIO DECODER |
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