
User’s Manual U14579EJ2V0UM
18
14.4.14
HC state transitions ................................................................................................................329
14.4.15
List service flow ......................................................................................................................330
CHAPTER 15 AC97U (AC97 UNIT)......................................................................................................336
15.1
General.....................................................................................................................................336
15.2
Configuration Register Set ....................................................................................................336
15.2.1
VID (offset address: 0x00 to 0x01) .........................................................................................337
15.2.2
DID (offset address: 0x02 to 0x03).........................................................................................337
15.2.3
PCICMD (offset address: 0x04 to 0x05).................................................................................338
15.2.4
PCISTS (offset address: 0x06 to 0x07) ..................................................................................339
15.2.5
RID (offset address: 0x08) .....................................................................................................340
15.2.6
CLASSC (offset address: 0x09 to 0x0B) ................................................................................340
15.2.7
CACHELS (offset address: 0x0C) ..........................................................................................340
15.2.8
MLT (offset address: 0x0D) ....................................................................................................341
15.2.9
HEDT (offset address: 0x0E)..................................................................................................341
15.2.10
BIST (offset address: 0x0F) ...................................................................................................341
15.2.11
BASEADR (offset address: 0x10 to 0x13)..............................................................................342
15.2.12
SVID (offset address: 0x2C to 0x2D) .....................................................................................343
15.2.13
SUBID (offset address: 0x2E to 0x2F) ...................................................................................343
15.2.14
EXROMADR (offset address: 0x30 to 0x33) ..........................................................................344
15.2.15
INTL (offset address: 0x3C) ...................................................................................................344
15.2.16
INTP (offset address: 0x3D) ...................................................................................................345
15.2.17
MIN_GNT (offset address: 0x3E) ...........................................................................................345
15.2.18
MAX_LAT (offset address: 0x3F) ...........................................................................................345
15.3
Operational Register Set ........................................................................................................346
15.3.1
INT_CLR/INT_STATUS (offset address: 0x00) ......................................................................347
15.3.2
CODEC_WR (offset address: 0x04).......................................................................................349
15.3.3
CODEC_RD (offset address: 0x08)........................................................................................350
15.3.4
CODEC_REQ (offset address: 0x0C) ....................................................................................351
15.3.5
SLOT12_WR (offset address: 0x10) ......................................................................................352
15.3.6
SLOT12_RD (offset address: 0x14) .......................................................................................353
15.3.7
CTRL (offset address: 0x18) ..................................................................................................354
15.3.8
ACLINK_CTRL (offset address: 0x1C)...................................................................................356
15.3.9
SRC_RAM_DATA (offset address: 0x20)...............................................................................358
15.3.10
INT_MASK (offset address: 0x24)..........................................................................................359
15.3.11
DAC1_CTRL (offset address: 0x30).......................................................................................361
15.3.12
DAC1L (offset address: 0x34) ................................................................................................362
15.3.13
DAC1_BADDR (offset address: 0x38)....................................................................................363
15.3.14
DAC2_CTRL (offset address: 0x3C) ......................................................................................364
15.3.15
DAC2L (offset address: 0x40) ................................................................................................365
15.3.16
DAC2_BADDR (offset address: 0x44)....................................................................................366
15.3.17
DAC3_CTRL (offset address: 0x48).......................................................................................367
15.3.18
DAC3L (offset address: 0x4C)................................................................................................368
15.3.19
DAC3_BADDR (offset address: 0x50)....................................................................................369