SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 73

• Manufacturer Part Number: SC2200
• Description: Thin Client On a Chip
• Manufacturer: NSC [National Semiconductor]

Revision 3.0
Signal Definitions
2.4.14 AC97 Audio Interface Signals
Signal Name
BIT_CLK
SDATA_OUT
SDATA_IN
SDATA_IN2
SYNC
AC97_CLK
AC97_RST#
PC_BEEP
EBGA
AK13
AK14
AL14
AL13
AL15
AJ14
AJ15
H31
(Continued)
Ball No.
TEPBGA
U30
U31
U29
P29
AL8
P30
P31
V31
Type
O
O
O
O
O
I
I
I
Description
Audio Bit Clock. The serial bit clock from
the codec.
Note: If selected as BIT_CLK function but
Serial Data Output. This output transmits
audio serial data to the codec.
Serial Data Input. This input receives serial
data from the primary codec.
Note: If selected as SDATA_IN function but
Serial Data Input 2. This input receives
serial data from the secondary codec. This
signal has wakeup capability.
Serial Bus Synchronization. This bit is
asserted to synchronize the transfer of data
between the SC2200 and the AC97 codec.
Codec Clock. It is twice the frequency of the
Audio Bit Clock.
Codec Reset. S3 to S5 wakeup is not sup-
ported because AC97_RST# is powered by
V
needed, a circuit in the system board should
be used to reset the AC97 codec.
PC Beep. Legacy PC/AT speaker output.
IO
. If wakeup from states S3 to S5 are
73
not used, tie BIT_CLK low.
not used, tie SDATA_IN low.
TFT_PRSNT (Strap)
CLKSEL3 (Strap)
F_DEVSEL#
F_STOP#
F_TRDY#
F_GNT0#
GPIO16+
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Mux
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