SAF7849HL/M295,557 NXP Semiconductors, SAF7849HL/M295,557 Datasheet - Page 2

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

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

NXP Semiconductors
SAF784X_2
Product data sheet
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Two additional analog audio inputs (AUX_L, AUX_R) to allow the ARM microprocessor
access to external audio signals (e.g. tuner); allows audio algorithms (e.g. bass boost)
to be performed on external audio signals
Real-time clock operated from separate 32 kHz crystal; allows low-power Standby
mode with real-time clock still operational
Watchdog timer
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32 GPIOs
Two standard UART channels
Two external interrupt pins
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400 kbit/s standards
Slave I
speed to an I
Integrated digital HF/Mirror detector with measurement of minimum and maximum
peak values, amplitude and offset
Integrated CD-text decoder
Up to 6 decode speed, CLV or CAV modes
LQFP144 package with 0.5 mm pin pitch
Separate left and right channel digital silence detection available on KILL pins
Digital silence detection available on loopback data from external source as well as
internal data
‘Filterless’ pseudo bit stream audio DAC with minimal external components
Stereo line outputs for audio DAC
Loopback mode allowing the use of integrated DAC with external I
Compatible with voltage mode mechanisms
On-chip buffering and filtering of the diode signals from the mechanism in order to
optimize the signals for the decoder and servo parts
LF (servo) signals converted to digital representations by Sigma-Delta ADCs shared
between pairs of channels to minimize DC offset between channels
HF part summed from signals D1 to D4 and converted to digital signals by HF 6-bit
ADC
Selectable DC offset cancellation of quiescent mechanism voltages and dark currents,
digitally controlled; additional fine DC-offset cancellation in digital domain
Eye pattern monitor system to observe selectable points within the analog pre-amp
Current and average jitter values available via registers
On-chip laser power control, up to maximum currents of 120 mA
Laser on-off control, including ‘soft’-start control - zero-to-nominal output power in
1 ms
Monitor control and feedback circuit to maintain nominal output power throughout laser
life
Configured for Nsub (N-substrate) monitor diode
JTAG interface for device access and ARM code development (compatible with ARM
multi-ICE)
All digital input pins 5 V tolerant
Low-latency static memory interface to access a maximum of two 2 MB memory
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S-bus, S/PDIF, subcode (V4) and subcode sync outputs
C-bus interface configurable for master or slave modes, supporting 100 kbit/s and
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S-bus mode, in which the channel decoder can synchronize the CD playback
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S-bus clock input
One chip CD audio device with integrated MP3/WMA decoder
Rev. 02 — 9 May 2008
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S-bus/EIAJ sources
SAF784x
© NXP B.V. 2008. All rights reserved.
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