CMI9738 Datasheet, PDF (17/36 Pages) List of Unclassifed Manufacturers – Integrated Multi-channel AC97

CMI 9738
Integrated Multi-channel AC‘97
Cold AC ‘97 Reset Î a cold reset is achieved by asserting RESET# for the minimum specified
time. By driving RESET# low, BIT_CLK, and SDATA_IN will be
activated, or re-activated as the case may be, and all CMI9738 control
registers will be initialized to their default power on reset values.
Note: RESET# is an asynchronous input.
# denotes active low
Warm AC’97 Reset Îa warm reset will re-activate the AC-Link without altering the current
CMI9738 register values. A warm reset is signaled by driving SYNC high
for a minimum of 1us in the absence of BIT_CLK.
Note: Within normal audio frames, SYNC is a synchronous input. However, in the absence of
BIT_CLK, SYNC is treated as an asynchronous input used in the generation of a warm reset
to the CMI9738.
C-MEDIA Electronics Inc.
6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan, R.O.C. 106
TEL: [phone] FAX: [phone] E-mail:[e-mail]
Revision Date Apr./2002
Revision 1.1