tmpr4937 TOSHIBA Semiconductor CORPORATION, tmpr4937 Datasheet - Page 409
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tmpr4937
Manufacturer Part Number
tmpr4937
Description
64-bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMPR4937.pdf
(552 pages)
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14.3 Functional Description
14.3.1
14.3.1.1 Stereo Audio and Optional Modem Connection
link start-up sequence and the other mechanisms will be described. Using low-power mode comes last.
ACLC provides four mechanisms to operate AC’97-compliant CODEC(s):
This section first describes the CODEC connection, chip configuration, and overall usage-flow. Then AC-
•
•
•
•
CODEC Connection
supports up to two CODECs to be connected. This section shows some system configuration diagrams
for typical usages. Note that the diagrams shown here is intended to provide conceptual understanding
and some components may be necessary on the actual circuit board to ensure proper electrical signals.
The diagrams assume CODECs compliant with the CODEC ID strapping recommendation described in
the section D.5.2 of the AC’97 revision 2.1 specification.
The ACLC module has two SDIN (named as SDATA_IN in the AC’97 specification) signals and
AC-link status control (start-up and low-power mode)
CODEC register access
Sample-data transmission and reception
GPIO operation
Figure 14.3.1 Stereo Audio and Optional Modem Connection Diagram
ACRESET*
ACLC
BITCLK
SDOUT
SDIN0
SDIN1
SYNC
Optional Modem CODEC (CODEC ID=’01’)
Audio CODEC (CODEC ID=‘00’)
14-3
SYNC
BIT_CLK
SDATA_OUT
RESET#
SDATA_IN
SYNC
BIT_CLK
SDATA_OUT
RESET#
SDATA_IN
Chapter 14 AC-link Controller
CID1
CID0
CID1
CID0
GND
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