YMF744B ETC [List of Unclassifed Manufacturers], YMF744B Datasheet - Page 22

• Manufacturer Part Number: YMF744B
• Description: DS-1S
• Manufacturer: ETC [List of Unclassifed Manufacturers]

YMF744B
48-49h: DS-1S Control
b0................CRST: AC’97 Software Reset Signal Control
b2................WRST: AC’97 Warm Reset
b3................ACLS: AC-Link Status
This bit controls the CRST# signal.
This bit places the AC’97 in warm reset condition when the BIT_CLK signal on the AC’97 remains in
inactive state. If this bit is set to “1”, it will automatically return to “0” after 1.3µs time duration. This
bit is valid only while the ACLS bit is set to “0”. Except in this case, even if this bit is attempted to be
set to “1”, no warm reset will be generated (write operation of “1” remains disabled).
This bit indicates whether or not the AC-link is active. This bit is “1” when the AC-link remains in
active state (the BIT_CLK signal is active). This bit is “0” during the following conditions:
b15
“0”: Inactive (CRST#=High)
“1”: Active (CRST#=Low)
“0”: Normal
“1”: AC’97 Warm Reset
“0”: AC’97 Inactive
“1”: AC’97 Active
-
Read / Write
Default: 0001h
Access Bus Width: 8, 16, 32-bit
- When the CRST# pin is active (CRST#=Low)
- When either the PR4 bit or PR5 bit of 4A-4Bh: DS-1S Power Control 1 register is set to “1”
b14
-
b13
-
b12
-
(default)
(default)
b11
-
(default)
b10
-
(Read Only)
b9
-
-22-
b8
-
b7
-
b6
-
b5
-
b4
-
ACLS WRST
b3
February 3, 1999
b2
B1
-
CRST
b0