參數(shù)資料
型號: LM4560
廠商: National Semiconductor Corporation
英文描述: Advanced PCI Audio Accelerator
中文描述: 先進的PCI音頻加速器
文件頁數(shù): 53/54頁
文件大?。?/td> 380K
代理商: LM4560
7.4.1 Timing Table
(Continued)
T
A
= 0C to 70C, V
dd
= 3.3V
±
5%, V
SS
= 0V
Symbol
PCI Reset
Trst_low
RST
#
low time after power stable
Trst_clk
RST
#
low time after PCICLK stable
AC’97 Reset (Cold and Warm)
Trst_low
ACRST_low time
Trst2clk
ACRST_ inactive to ACCCLK
starts
Tsync_high
ACSYNC high time
Tsync2clk
ACSYNC_ inactive to ACCCLK
starts
Parameter
Min
Max
Units
1
ms
μs
100
1
μs
ns
162.8
1
μs
ns
162.8
7.4.2 PCI Signals
PCI Inputs: AD31:0, CBE
#
3:0, FRAME
#
, IRDY
#
, TRDY
#
, STOP
#
, DEVSEL
#
, IDSEL
#
, PAR, GNT
#
PCI Outputs: AD31:0, CBE
#
3:0, FRAME
#
, IRDY
#
, TRDY
#
, STOP
#
, DEVSEL
#
, IDSEL
#
, PAR, REQ
#
, INTA
#
Point-to-Point Signals: REQ
#
, GNT
#
Symbol
Parameter
Tval_bus
CLK to PCI output Valid Delay_
bussed signals
Tval_ptp
CLK to PCI output Valid Delay_
point to point signals
Ton
PCI Output float to active
Toff
PCI Output active to float
AD0:31
bus
bussed signals
Tsu
GNT
CLK_GNT
#
Tsu
REQ
CLK_REQ
#
Th
PCI Input hold time from CLK
AC’97 Signals
Tsetup
Setup from edge of ACCLK
Thold
Hold from edge of ACCLK
Condition
Min
2
Max
11
Units
ns
2
12
ns
2
ns
ns
ns
28
PCI Input set up time to CLK_
9
PCI Input set up time to
12
ns
PCI Input set up time to
12
ns
0
ns
10
10
ns
ns
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