CS4299-BQZ Cirrus Logic Inc, CS4299-BQZ Datasheet - Page 15

• Manufacturer Part Number: CS4299-BQZ
• Description: IC CODEC AC'97 W/SRC 48-LQFP
• Manufacturer: Cirrus Logic Inc
• Series: SoundFusion™r
• Type: Audio Codec '97r

Specifications of CS4299-BQZ

• Data Interface: Serial
• Resolution (bits): 18 b, 20 b
• Number Of Adcs / Dacs: 1 / 1
• Sigma Delta: Yes
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.3 V ~ 5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Audio Codec Type: Stereo
• No. Of Adcs: 1
• No. Of Dacs: 1
• No. Of Input Channels: 8
• No. Of Output Channels: 3
• Adc / Dac Resolution: 20bit
• Sampling Rate: 48kSPS
• Ic Interface Type: Serial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS319PP6
3.1.2 Command Address Port (Slot 1)
R/W
RI[6:0]
3.1.3 Command Data Port (Slot 2)
WD[15:0]
NOTE:
3.1.4 PCM Playback Data (Slots 3-10)
PD[19:0]
WD15 WD14 WD13 WD12 WD11 WD10 WD9 WD8 WD7 WD6 WD5 WD4 WD3 WD2 WD1 WD0
PD19 PD18 PD17 PD16 PD15 PD14 PD13 PD12 PD11 PD10 PD9 PD8 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0
Bit 19
Bit 19
Bit 19
R/W
RI6
18
18
18
RI5
17
17
17
RI4
16
16
bits will occur in the AC ’97 2.1 audio codec. When the bit is ‘cleared’, a write will occur. For any
read or write access to occur, the Frame Valid bit (F0) must be ‘set’ and the Codec ID[1:0] bits
(F[14:15]) must match the Codec ID of the AC ’97 2.1 audio codec being accessed. Additionally,
for a primary codec, the Slot 1 Valid bit (F1) must be ‘set’ for a read access and both the Slot 1
Valid bit (F1) and the Slot 2 Valid bit (F2) must be ‘set’ for a write access. For a secondary co-
dec, both the Slot 1 Valid bit (F1) and the Slot 2 Valid bit (F2) must be ‘cleared’ for read and
write accesses. See Figure 9 for bit frame positions.
CS4299. All registers are defined at word addressable boundaries. The RI0 bit must be ‘clear’
to access CS4299 registers.
16
that when the Slot 1 Valid bit in output Slot 0 is ‘set’, the Slot 2 Valid bit in output slot 0 should
always be ‘set’ during the same audio frame. No write access may be split across 2 frames.
the left and right DACs and/or the S/PDIF transmitter. Table 8 on page 30 lists a cross reference
for each function and its respective slot. The mapping of a given slot to a DAC is determined by
the state of the ID[1:0] bits in the Extended Audio ID Register (Index 28h) and by the SM[1:0]
and AMAP bits in the AC Mode Control Register (Index 5Eh).
Read/Write. When this bit is ‘set’, a read of the AC ’97 register specified by the register index
Register Index. The RI[6:0] bits contain the 7-bit register index to the AC ’97 registers in the
Write Data. The WD[15:0] bits contain the 16-bit value to be written to the register. If an access
is a read, this slot is ignored.
For any write to an AC ’97 register, the write is defined to be an ‘atomic’ access. This means
Playback Data. The PD[19:0] bits contain the 20-bit PCM playback (2’s complement) data for
RI3
15
15
15
RI2
14
14
14
RI1
13
13
13
RI0
12
12
12
11
11
0
11
10
10
0
10
0
9
9
9
8
0
8
8
7
0
7
7
0
6
6
6
5
0
5
4
0
4
5
0
3
3
4
2
0
3
2
CS4299
Reserved
CS4299
2
1
0
1
1
0
0
0
0
15
15