Samsung S3C2451X User Manual page 692

AC97 CONTROLLER
AC97 CONTROLLER OPERATION
This section explains the AC97 controller operation. Also it says to program guide. You must study AC-Link,
Power-down sequence and Wake-up sequence.
BLOCK DIAGRAM
Figure 27-1 shows the functional block diagram of S3C2451 AC97 Controller. The AC97 signals form the AC-
link, which is a point-to-point synchronous serial inter-connecting that supports full-duplex data transfers. All digital
audio streams and command/status information are communicated over the AC-link.
APB
APB
I/F
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
27-2
Specifications and information herein are subject to change without notice.
SFR
DMA
Engine
Interrupt
Control
Figure 27-1. AC97 Block Diagram
S3C2451 RISC MICROPROCESSOR
FSM & Control
PCM in
FIFO
PCM
out FIFO
MIC in
FIFO
AC-link
AC-link
I/F