参数资料
型号: YMF744B
厂商: Electronic Theatre Controls, Inc.
英文描述: DS-1S
中文描述: 的DS - 1秒
文件页数: 15/60页
文件大小: 303K
代理商: YMF744B
YMF744B
February 3, 1999
-22-
48-49h: DS-1S Control
Read / Write
Default: 0001h
Access Bus Width: 8, 16, 32-bit
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
B1
b0
-
ACLS WRST
-
CRST
b0................CRST: AC’97 Software Reset Signal Control
This bit controls the CRST# signal.
“0”: Inactive (CRST#=High)
“1”: Active (CRST#=Low)
(default)
b2................WRST: AC’97 Warm Reset
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 1.3s 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).
“0”: Normal
(default)
“1”: AC’97 Warm Reset
b3................ACLS: AC-Link Status
(Read Only)
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:
- 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”
“0”: AC’97 Inactive
(default)
“1”: AC’97 Active
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