STA015B$ STMicroelectronics, STA015B$ Datasheet - Page 34

• Manufacturer Part Number: STA015B$
• Description: DECODER AUDIO MPEG 2.5 8X8LFBGA
• Manufacturer: STMicroelectronics
• Type: Audio Decoderr

Specifications of STA015B$

• Applications: Sound Cards, Players, Recorders
• Voltage - Supply, Digital: 2.4 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 64-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply, Analog: -

STA015
the default OCLK frequency is 12.288 MHz.
PLLFRAC_L ([7:0])
PLLFRAC_H ([15:8])
Address: 0x64 - 0x65 (100 - 101)
Type: R/W
Software Reset: 0x46 | 0x5B
Hardware Reset: 0xNA | 0x5B
The registers are considered logically concatenated and contain the fractional values for the PLL, used to
select the internal configuration. After Reset, the values are NA, and the operational setting are done when
the MPEG synchronisation is achieved.
The following formula describes the relationships among all the STA015 fractional PLL parameters:
where:
FRAC=256 x FRAC_H + FRAC_L (decimal)
These registers are a reference for 48 / 24 / 12 / 32 / 16 / 8KHz audio.
FRAME_CNT_L
FRAME_CNT_M
FRAME_CNT_H
34/56
PF15
FC15
FC23
MSB
MSB
MSB
MSB
MSB
FC7
PF7
b7
b7
b7
b7
b7
PF14
FC14
FC22
FC6
PF6
b6
b6
b6
b6
b6
OCLK_Freq
FC13
FC21
PF13
PF5
FC5
b5
b5
b5
b5
b5
=
------------ -
X
PF12
1
FC12
FC20
+
FC4
PF4
b4
b4
b4
b4
b4
1
⋅
MCLK_Freq
----------------------------------- -
N
+
FC11
FC19
PF11
1
PF3
FC3
b3
b3
b3
b3
b3
⋅
M
+
1
PF10
FC10
FC18
FC2
PF2
+
b2
b2
b2
b2
b2
FRAC
---------------- -
65536
FC17
PF1
PF9
FC1
FC9
b1
b1
b1
b1
b1
FC16
LSB
LSB
LSB
LSB
LSB
FC0
FC8
PF0
PF8
b0
b0
b0
b0
b0