mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 251

• Manufacturer Part Number: mfr4300
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
1
2
Table A-13. AMI Interface AC Switching Characteristics Over the Operating Range
t
described in
Depends on duty cycle of the CHI and host interface clock: t
+ 27, where t
WE# HIGH to OE# LOW
OE# HIGH to WE# LOW
OE# LOW to Data valid
AMI_CLK
Address Setup Read
OE# HIGH to High-Z
Address Setup Write
Address Hold Read
OE# LOW to Low-Z
Address Hold Write
Read Time Cycle
Write Time Cycle
WE# HIGH time
OE# HIGH time
WE# LOW time
Characteristic
OE# LOW time
Data Setup
Data Hold
is the period in ns of the CHI and host interface clock selected by IF_SEL[1:0] as
Table
AMI_CLK_HIGH
2-6.
is the period in ns of the high phase of the CHI and host interface clock.
Symbol
t
t
t
t
WEOE
OEWE
t
t
t
t
t
t
t
HZOE
t
t
LZOE
t
SAW
HAW
HWE
t
SAR
HAR
DOE
HOE
t
t
LWE
LOE
WC
RC
SD
HD
MFR4300 Data Sheet, Rev. 3
2.5 u t
2.5 u t
1.5 u t
0.5 u t
Read Cycle
Write Cycle
3 u t
1 u t
AMI_CLK
AMI_CLK
AMI_CLK
AMI_CLK
AMI_CLK
Min
AMI_CLK
5
5
5
5
5
5
5
5
0
+ 10
+ 27
+ 32
+ 5
+ 5
LOE
2
= (3.0 u t
2.5 u t
AMI_CLK
AMI_CLK
Max
15
+ 23
) – t
AMI_CLK_HIGH
Electrical Characteristics
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1
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