CS4205-KQ Cirrus Logic Inc, CS4205-KQ Datasheet - Page 49

• Manufacturer Part Number: CS4205-KQ
• Description: Audio CODECs IC AC'97 Codec for Docking Stations
• Manufacturer: Cirrus Logic Inc

Specifications of CS4205-KQ

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.33
SDI1M
SRZC[1:0]
LPFS[1:0]
HPFS[1:0]
GL[3:0]
GR[3:0]
Default
If the digital effects engine signals an overflow condition by setting the ELOF or EROF bit in the IEC Status Register
(Index 6Eh, Address 0B), the controller should correct the error by reducing the effects engine output volume in this
register.
D15
Res
DS489PP4
SDI1M SRZC1 SRZC0 LPFS1 LPFS0 HPFS1 HPFS0 GL3
Signal Processing Engine Control Register (Index 6Eh, Address 08h)
D14
D13
SRZC[1:0]
HPFS[1:0]
LPFS[1:0]
Serial Data Input 1 Mode. The SDI1M bit controls the flow of data from the first serial data input
into the signal processing engine. If this bit is ‘0’, the two channels of the SDI1 port are routed to
their respective channels of the SDI1 volume control. If this bit is ‘1’, the left channel of the SDI1
port is routed to both, the left and right channels of the SDI1 volume control.
Soft Ramp and Zero Cross Control. The SRZC bits control when changes take effect on the dig-
ital volume controls. Table 19 lists the available settings.
Low Pass Filter Select. The LPFS[1:0] bits select the center frequency of the low pass filter for
the EQ algorithm. Table 19 lists the available settings.
the EQ algorithm. Table 19 lists the available settings.
Effects Engine Left Output Volume. The GL[3:0] bits are used to control the effects engine left
channel output volume. Each step corresponds to 1 dB gain adjustment, with 0000 = 0 dB atten-
uation. The total range is 0 dB to -15 dB attenuation.
Effects Engine Right Output Volume. The GR[3:0] bits are used to control the effects engine right
channel output volume. Each step corresponds to 1 dB gain adjustment, with 0000 = 0 dB atten-
uation. The total range is 0 dB to -15 dB attenuation.
1800h
High Pass Filter Select. The HPFS[1:0] bits select the center frequency of the high pass filter for
D12
00
01
10
11
D11
Table 19. Volume Change Modes and EQ Filter Selects
soft ramp (1/8 dB step per frame)
D10
1/8 dB step per zero crossing
Volume Change Mode
on zero crossings
D9
immediately
D8
D7
GL2
D6
Low Pass
reserved
GL1
100 Hz
D5
20 Hz
50 Hz
Filter
GL0
D4
High Pass
reserved
10 kHz
15 kHz
20 kHz
GR3
Filter
D3
GR2
D2
GR1
D1
CS4205
GR0
D0
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