SAF7849HL/M295,557 NXP Semiconductors, SAF7849HL/M295,557 Datasheet - Page 92

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SAF7849HL/M295,557

Manufacturer Part Number
SAF7849HL/M295,557
Description
IC AUD DECODER 144LQFP
Manufacturer
NXP Semiconductors
Type
Audio Decoderr
Datasheet

Specifications of SAF7849HL/M295,557

Applications
Audio CD
Voltage - Supply, Analog
3 V ~ 3.6 V
Voltage - Supply, Digital
1.8V, 3.3V
Mounting Type
Surface Mount
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
935287932557

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SAF7849HL/M295,557
Manufacturer:
NXP Semiconductors
Quantity:
10 000
NXP Semiconductors
19. Contents
1
2
2.1
2.2
3
4
5
5.1
5.2
6
6.1
6.1.1
6.1.2
6.2
6.3
6.4
6.5
6.5.1
6.5.2
6.5.3
6.5.4
6.5.4.1
6.5.4.2
6.5.5
6.5.5.1
6.5.5.2
6.5.5.3
6.5.5.4
6.5.5.5
6.5.5.6
6.5.5.7
6.5.5.8
6.5.5.9
6.5.5.10
6.5.5.11
6.5.5.12
6.5.6
6.5.6.1
6.5.6.2
6.5.6.3
6.5.7
6.5.7.1
6.5.7.2
6.5.7.3
6.5.8
6.5.8.1
SAF784X_2
Product data sheet
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 9
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Formats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Analog data acquisition. . . . . . . . . . . . . . . . . . . 9
LF acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . 9
HF acquisition . . . . . . . . . . . . . . . . . . . . . . . . . 11
Analog clock generation . . . . . . . . . . . . . . . . . 12
General purpose analog inputs . . . . . . . . . . . 13
Auxiliary analog inputs . . . . . . . . . . . . . . . . . . 13
Channel decoder . . . . . . . . . . . . . . . . . . . . . . 16
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . 16
Clock control . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Decoder-ARM microprocessor interface. . . . . 20
Programming interface . . . . . . . . . . . . . . . . . . 20
Interrupt strategy. . . . . . . . . . . . . . . . . . . . . . . 21
EFM bit detection and demodulation . . . . . . . 21
Signal conditioning . . . . . . . . . . . . . . . . . . . . . 22
Bit detector . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Limiting the PLL frequency range . . . . . . . . . . 31
Run length 2 push-back detector . . . . . . . . . . 31
Available signals for monitoring . . . . . . . . . . . 32
Use of jitter measurement. . . . . . . . . . . . . . . . 32
Internal lock flags . . . . . . . . . . . . . . . . . . . . . . 33
Format of the measurements signal Meas1
on pin CL1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . 34
EFM demodulation . . . . . . . . . . . . . . . . . . . . . 34
Sync detection and synchronization . . . . . . . . 34
Sync protection . . . . . . . . . . . . . . . . . . . . . . . . 34
CD decoding . . . . . . . . . . . . . . . . . . . . . . . . . . 35
General description of CD decoding. . . . . . . . 35
Q-channel subcode interface . . . . . . . . . . . . . 35
CD-text interface . . . . . . . . . . . . . . . . . . . . . . . 36
Main data decoding . . . . . . . . . . . . . . . . . . . . 37
Data processing . . . . . . . . . . . . . . . . . . . . . . . 37
Data Latency + FIFO operation . . . . . . . . . . . 37
Safe and unsafe correction modes . . . . . . . . . 38
Error corrector statistics . . . . . . . . . . . . . . . . . 38
CFLG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
One chip CD audio device with integrated MP3/WMA decoder
Rev. 02 — 9 May 2008
6.5.8.2
6.5.9
6.5.9.1
6.5.9.2
6.5.9.3
6.5.9.4
6.5.9.5
6.5.9.6
6.5.9.7
6.5.9.8
6.5.9.9
6.5.9.10
6.5.10
6.5.10.1
6.5.10.2
6.5.10.3
6.5.10.4
6.5.10.5
6.5.10.6
6.5.10.7
6.6
6.6.1
6.6.2
6.6.3
6.6.4
6.6.4.1
6.6.4.2
6.6.4.3
6.6.4.4
6.6.4.5
6.6.4.6
6.6.5
6.6.5.1
6.6.5.2
6.6.5.3
6.6.5.4
6.6.5.5
6.6.5.6
6.6.6
6.6.6.1
6.6.6.2
6.6.6.3
6.6.6.4
6.6.6.5
6.6.7
6.6.8
6.6.9
6.6.10
BLER counters . . . . . . . . . . . . . . . . . . . . . . . . 39
Audio back end and data output interfaces . . 39
Audio processing . . . . . . . . . . . . . . . . . . . . . . 40
Interpolate-and-hold . . . . . . . . . . . . . . . . . . . . 40
Soft mute and error detection. . . . . . . . . . . . . 41
Hard mute on EBU . . . . . . . . . . . . . . . . . . . . . 41
Silence detection and kill generation . . . . . . . 41
De-emphasis filter . . . . . . . . . . . . . . . . . . . . . 41
Upsample filter (four times) . . . . . . . . . . . . . . 42
Data output interfaces . . . . . . . . . . . . . . . . . . 43
I
Subcode (V4) interface. . . . . . . . . . . . . . . . . . 44
Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Frequency setpoint. . . . . . . . . . . . . . . . . . . . . 46
Position error . . . . . . . . . . . . . . . . . . . . . . . . . 46
Motor control loop gains (K
Operation modes . . . . . . . . . . . . . . . . . . . . . . 47
Writing, reading motor integrator value . . . . . 47
Some notes on application motor servo. . . . . 47
Tacho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Parallel Digital Servo IC (PDSIC) . . . . . . . . . . 49
PDSIC registers and servo RAM control . . . . 49
Diode signal processing . . . . . . . . . . . . . . . . . 51
Signal conditioning . . . . . . . . . . . . . . . . . . . . . 52
Focus servo system . . . . . . . . . . . . . . . . . . . . 53
Focus start-up . . . . . . . . . . . . . . . . . . . . . . . . 53
Focus position control loop. . . . . . . . . . . . . . . 53
Dropout detection. . . . . . . . . . . . . . . . . . . . . . 55
Focus loss detection and fast restart . . . . . . . 55
Focus loop gain switching . . . . . . . . . . . . . . . 55
Focus automatic gain control loop . . . . . . . . . 55
Radial servo system. . . . . . . . . . . . . . . . . . . . 55
Radial PID - on-track mode . . . . . . . . . . . . . . 55
Level initialization . . . . . . . . . . . . . . . . . . . . . . 56
Dropout detection. . . . . . . . . . . . . . . . . . . . . . 56
Focus loss detection and fast restart . . . . . . . 57
Focus loop gain switching . . . . . . . . . . . . . . . 57
Focus automatic gain control loop . . . . . . . . . 57
Radial servo system. . . . . . . . . . . . . . . . . . . . 57
Level initialization . . . . . . . . . . . . . . . . . . . . . . 57
Sledge control . . . . . . . . . . . . . . . . . . . . . . . . 57
Tracking control . . . . . . . . . . . . . . . . . . . . . . . 57
Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Radial automatic gain control loop . . . . . . . . . 58
Off-track counting . . . . . . . . . . . . . . . . . . . . . . 58
Defect detection . . . . . . . . . . . . . . . . . . . . . . . 59
Off-track detection . . . . . . . . . . . . . . . . . . . . . 59
High level features . . . . . . . . . . . . . . . . . . . . . 59
2
S interface . . . . . . . . . . . . . . . . . . . . . . . . . . 43
P
, K
SAF784x
© NXP B.V. 2008. All rights reserved.
F
and K
continued >>
I
). . . . . 46
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