sta015t STMicroelectronics, sta015t Datasheet - Page 23

• Manufacturer Part Number: sta015t
• Description: Mpeg 2.5 Layer Iii Audio Decoder With Adpcm Capability
• Manufacturer: STMicroelectronics

ADPCM_DATA_READY
Address: 0x52 (82)
Type: R/W
Software Reset: 0x00
Hardware Reset: 0x00
ADR: Adpcm Data Ready
This bit signal (ADPCM encoded data ready)
PLLFRAC_441_H
Address: 0x52 (82)
Type: R/W
Software Reset: 0x00
Hardware Reset: 0x00
The registers are considered logically concate-
nated and contain the fractional values for the
PLL, for 44.1KHz reference frequency.
(see also PLLFRAC_L and PLLFRAC_H regis-
ters)
ADPCM_SAMPLE_FREQ
Address: 0x53 (83)
Type: R/W
PF15 PF14 PF13 PF12 PF11 PF10 PF9
MSB
MSB
b7
b7
X
b6
b6
X
b5
b5
X
b4
b4
X
b3
b3
X
b2
b2
X
b1
b1
X
ADR
LSB
LSB
PF8
b0
b0
Software Reset: 0x00
Hardware Reset: 0x00
ADPCM_SF: Adpcm Sample Frequency
PCMDIVIDER
Address: 0x54 (84)
Type: RW
Software Reset: 0x03
Hardware Reset: 0x03
PCMDIVIDER is used to set the frequency ratio
between the OCLK (Oversampling Clock for
DACs), and the SCKT (Serial Audio Transmitter
Clock).
The relation is the following:
MSB
PD7
b7
X
7
b6
PD6
X
6
0x0A
0x0E
0x02
b5
X
SCKT_freq
PD5
5
STA015-STA015B-STA015T
b4
PD4
4
2 1 + PCM_DIV )
b3
OCLK_freq
PD3
3
ADPCM_SF
b2
PD2
2
16KHz
32KHz
8KHz
b1
PD1
1
LSB
b0
PD0
23/44
0