Samsung S5PC110 Manual page 1887

S5PC110_UM
AC_GLBCTRL
-
Transfer data enable using
AC-link
AC-Link on
Warm reset
Cold reset
Bit
01 = PIO
10 = DMA
11 = Reserved
[7:4] Reserved.
[3] 0 = Disables
1 = Enables
[2] 0 = Off
1 = SYNC signal transfer to Codec
[1] 0 = Normal
1 = Wake up codec from power down
[0] 0 = Normal
1 = Reset Codec and Controller logic
Notes:
1. During Cold reset, writing to any AC97 Registers is
not affected.
2. When recovering from Cold reset, writing to any
AC97 Registers is not affected.
Example: For consecutive Cold reset and Warm reset,
first set AC_GLBCTRL=0x1 then set
AC_GLBCTRL=0x0.
After recovering from cold reset set
AC_GLBCTRL=0x2 then AC_GLBCTRL=0x0.
Description
4 AC97 CONTROLLER
Initial State
0000
0
0
0
0
4-15