AK5374 Datasheet, PDF (19/51 Pages) Asahi Kasei Microsystems – 24-bit Stereo ADC with USB Interface

[AK5374]
■ EEP-ROM Control Interface
Register information and descriptor information on EEP-ROM are read by SPI I/F (CSN, SK, EPAO and EPAI) pins. The
data on the I/F consists of Instruction Byte, Address Byte (MSB first, 16bits) and Input Data Byte (MSB first, 8bits). The
AK5374 outputs Instruction Byte and Address Byte on a falling edge of SK and down-loads address data from EPAI. The
next address data is read by sending SK signal continuously. Data reading ends by a rising edge of CSN. SK clock speed
is typically 1.5MHz. The AK5374 reads data from EEP-ROM according to a request signal from the USB host after
releasing a reset.
CSN
SK
EPAO
EPAI
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Instruction
Address (n)
0 0 0 0 0 0 1 1 0 0 0 0 0 0 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
Data (n)
Data (n+1)
“H” or “L”
D7 D6 D5 D4 D 3 D2 D1 D0 D7 D 6 D5 D4 D3 D2 D1 D0 D8 D7
Figure 15. EEP-ROM I/F Read Sequence
D1 D0
■ EEP-ROM memory map
<Header Block> 32 Bytes (fixed)
Addr
Name
000H Power Management
001H Microphone Gain Control
002H Reserved
003H PCM Format Alt 1
004H PCM Format Alt 2
005H PCM Format Alt 3
006H PCM Format Alt 4
007H PCM Format Alt 5
008H PCM Format Alt 6
009H PCM Format Alt 7
00AH Sampling Frequency Alt 1
00BH Sampling Frequency Alt 2
00CH Sampling Frequency Alt 3
00DH Sampling Frequency Alt 4
00EH Sampling Frequency Alt 5
00FH Sampling Frequency Alt 6
010H Sampling Frequency Alt 7
011H Endpoint Number
012H Initial Volume
013H Minimum Volume
014H Maximum Volume
015H Mute Control 1
016H Mute Control 2
017H Reserved
018H Reserved
019H Reserved
01AH Reserved
01BH Reserved
01CH Reserved
01DH Reserved
01EH Reserved
01FH Reserved
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
SELF
0
CLKO PMADR PMADL
0
0
0
PMMP
0
MGAIN2 MGAIN1 MGAIN0
0
0
0
0
0
0
0
0
INTFQ12 INTFQ11 INTFQ10 MIX1 RES11 RES10 SIGNED1 STEREO1
INTFQ22 INTFQ21 INTFQ20 MIX2 RES21 RES20 SIGNED2 STEREO2
INTFQ32 INTFQ31 INTFQ30 MIX3 RES31 RES30 SIGNED3 STEREO3
INTFQ42 INTFQ41 INTFQ40 MIX4 RES41 RES40 SIGNED4 STEREO4
INTFQ52 INTFQ51 INTFQ50 MIX5 RES51 RES50 SIGNED5 STEREO5
INTFQ62 INTFQ61 INTFQ60 MIX6 RES61 RES60 SIGNED6 STEREO6
INTFQ72 INTFQ71 INTFQ70 MIX7 RES71 RES70 SIGNED7 STEREO7
VALID1 FS48K1 FS44K1 FS32K1 FS22K1 FS16K1 FS11K1 FS8K1
VALID2 FS48K2 FS44K2 FS32K2 FS22K2 FS16K2 FS11K2 FS8K2
VALID3 FS48K3 FS44K3 FS32K3 FS22K3 FS16K3 FS11K3 FS8K3
VALID4 FS48K4 FS44K4 FS32K4 FS22K4 FS16K4 FS11K4 FS8K4
VALID5 FS48K5 FS44K5 FS32K5 FS22K5 FS16K5 FS11K5 FS8K5
VALID6 FS48K6 FS44K6 FS32K6 FS22K6 FS16K6 FS11K6 FS8K6
VALID7 FS48K7 FS44K7 FS32K7 FS22K7 FS16K7 FS11K7 FS8K7
0
0
0
0
0
EPNO2 EPNO1 EPNO0
INTVOL7 INTVOL6 INTVOL5 INTVOL4 INTVOL3 INTVOL2 INTVOL1 INTVOL0
MINVOL7 MINVOL6 MINVOL5 MINVOL4 MINVOL3 MINVOL2 MINVOL1 MINVOL0
MAXVOL7 MAXVOL6 MAXVOL5 MAXVOL4 MAXVOL3 MAXVOL2 MAXVOL1 MAXVOL0
0
0
0
0
OSME
ZCE
ZTM1
ZTM0
MHT7 MHT6 MHT5 MHT4 MHT3 MHT2 MHT1 MHT0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MS1197-E-00
- 19 -
2010/05