The DSP has general-purpose and dedicated registers in each of its functional blocks, страница 16

The numbers indicated after the bit name (ACSE12, for example) indicate the relative slot number. Slots are numbered in increasing order (0 first), while bits are numbered in decreasing order (MSB first).

! The bits in the ACSE register reset to zero.

A C ’97 Inp ut Slot V a lid Re g iste r (A C 97SV A L)

The numbers indicated after the bit name (ACSV12, for example) indicate the relative slot number. Slots are numbered in increasing order (0 first), and bits are numbered in decreasing order (MSB first). ! The bits in the AC97SVAL register reset to zero.

A C ’97 Slot Re q ue st Re g iste r (A C 97SREQ )

The numbers indicated after the bit name (ACRQ12, for example) indicate the relative slot number. Slots are numbered in increasing order (0 first), and bits are numbered in decreasing order (MSB first).

! The bits in the AC97SREQ register reset to zero.

 A C ’97 C ode c Re g iste rs

These register spaces are used to access registers in external codecs that are connected to the AC’97 port. Refer to the standard list provided in documentation for your codec. The IDs associated with primary, secondary, and tertiary registers report addressing information available for accessing the codecs.

A C ’97 C od e c Re g iste r Sp a c e -Prim a ry C od e c 0 (A C 97EX T0)

Re g iste r

Table B-18. AC’97 External Codec Space 0 Registers

A C ’97 C od e c Re g iste r Sp a c e , Se c ond a ry C od e c 1

(A C 97EX T1) Re g iste r

Table B-19. AC’97 External Codec Space 1 Registers