CS4205-KQZ Cirrus Logic Inc, CS4205-KQZ Datasheet - Page 17

• Manufacturer Part Number: CS4205-KQZ
• Description: IC CODEC AC97 I2S 48-LQFP
• Manufacturer: Cirrus Logic Inc
• Type: Audio Codec '97r

Specifications of CS4205-KQZ

• Package / Case: 48-LQFP
• Data Interface: Serial
• Resolution (bits): 18, 20 b
• Number Of Adcs / Dacs: 1 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 90 / 90
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 8
• Number Of Dac Outputs: 3
• Conversion Rate: 48 KSPs
• Interface Type: Serial (5-Wire)
• Resolution: 18 bit, 20 bit
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Number Of Channels: 1 ADC, 1 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 598-1182

3.2
Digital centric mode is detailed in Figure 11. In this
mode, the analog sources are first mixed in the an-
alog mixer and sent to the ADCs. The ADC outputs
are then mixed with the digital sources in the digital
mixer. This allows effects processing on all sources
and supports a “what you hear is what you record”
model. The processed digital signal is sent to the
DACs, bypassing the analog mixer using DAC di-
rect mode. The ADC mux must be set to stereo mix
to support this model. Consequently, only the mix
can be captured by the host, rather than the individ-
ual sources.
3.3
Host processing mode is detailed in Figure 12. This
mode is similar to digital centric mode, except the
DS489PP4
Digital Centric Mode
Host Processing Mode
Control Bits
SDOS[1:0]
CAPS[1:0]
SPDS[1:0]
AC Mode
DACS
MICS
DDM
Analog Centric
00, 01, 10 or 11
10 or 11
Mode
0 or 1
00
Table 1. AC Mode Control Configurations
1
0
00, 01, 10 or 11
Digital Centric
Mode
0 or 1
10
11
1
1
output of the digital mixer is captured by the host.
Any mixing with host sources and effects process-
ing is done on the host. The processed signal is sent
to the DACs, bypassing the analog mixer using
DAC direct mode. In host processing mode, the
playback and capture paths are completely separate
inside the CS4205.
3.4
Multi-channel mode is detailed in Figure 13. This
mode is an extension of any of the other three
modes, with the distinguishing feature that one or
two additional slot pairs are routed to the serial data
output ports. This allows for a complete
multi-channel solution with a single AC ’97 audio
codec and external DACs.
Multi-Channel Mode
Host Processing
00 or 01
Mode
0 or 1
10
0
1
-
Multi-Channel
00,10 or 11
Mode
0 or 1
0 or 1
0 or 1
N/A
00
CS4205
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