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232
Revision 1.1
G
Core Logic Module
(Continued)
5.4.4.1
F3 Index 10h, Base Address Register 0 (F3BAR0), points
to the base address of where the registers for XpressAU-
XpressAUDIO Support Registers
DIO support are located. Table 5-38 gives the bit formats of
the memory mapped XpressAUDIO configuration registers
that are accessed through F3BAR0.
Table 5-38. F3BAR0+Memory Offset: XpressAUDIO Configuration Registers
Bit
Description
Offset 00h-03h
Codec GPIO Status Register (R/W)
Reset Value: 00000000h
31
Codec GPIO Interface.
0: Disable.
1: Enable.
Codec GPIO SMI.
When asserted, allows codec GPIO interrupt to generate an SMI.
0: Disable.
1: Enable.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[1].
Second level SMI status is reported at F3BAR0+Memory Offset 10h/12h[1].
Reserved.
Must be set to 0.
Codec GPIO Status Valid. (Read Only)
Indicates if the status read is valid.
0: Yes.
1: No.
Codec GPIO Pin Status. (Read Only)
This field indicates the GPIO pin status that is received from the codec in slot 12 on
the SDATA_IN (ball AF22) signal.
30
29:21
20
19:0
Offset 04h-07h
Codec GPIO Control Register (R/W)
Reset Value: 00000000h
31:20
19:0
Reserved.
Must be set to 0.
Codec GPIO Pin Data.
This field indicates the GPIO pin data that is sent to the codec in slot 12 on the SDATA_OUT (ball
AD22) signal.
Offset 08h-0Bh
Codec Status Register (R/W)
Reset Value: 00000000h
31:24
Codec Status Address. (Read Only)
Address of the register for which status is being returned. This address comes from
slot 1 bits [19:12].
Codec Serial INT Enable.
When asserted, allows codec serial interrupt to cause an SMI.
0: Disable.
1: Enable.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[1].
Second level SMI status is reported at F3BAR0+Memory Offset 10h/12h[1].
SYNC Signal.
Sets SYNC (ball AE22) high or low.
0: Low.
1: High.
Reserved.
Must be set to 0.
Audio Bus Master 5 AC97 Slot Select.
Selects slot for Audio Bus Master 5 to receive data.
0: Slot 6.
1: Slot 11.
Audio Bus Master 4 AC97 Slot Select.
Selects slot for Audio Bus Master 4 to transmit data.
0: Slot 6.
1: Slot 11.
Reserved.
Must be set to 0.
Status Tag. (Read Only)
The codec status data in bits [15:0] of this register is updated in the current AC97 frame. (codec
ready, slot1 and slot2 bits in tag slot are all set in current AC97 frame).
0: Not new.
1: New, updated in current frame.
Codec Status Valid. (Read Only)
Indicates if the status in bits [15:0] of this register is valid. This bit is high during slots 3 to
11 of the AC97 frame (i.e., for approximately 14.5 μs), for every frame.
0: No.
1: Yes.
23
22
21
20
19
18
17
16