mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 48

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

Device Overview
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WE# indicates the direction of data transfer for a transaction.
OE# enables the AMI data output to a microcontroller during read transactions.
INT_CC# is an interrupt line that can be used for requesting, by means of the internal interrupt
controller, a service routine from a host controller.
The FlexRay CC AMI module does not support burst transactions.
For the AMI, D0 is the LSB of the 16-bit data bus.
If the AMI mode without the CHICLK_CC signal is selected (i.e.
IF_SEL[1:0] = 0b01), CHICLK_CC must be driven to logic 0 or logic 1 (it
must not be left floating).
1
2
3
4
CE#
Write data from D[15:8] to even byte address and from D[7:0] to odd byte address.
Write data from D[15:8].
Write data from D[7:0].
Read data from even byte address at D[15:8] and from odd byte address at D[7:0].
0
0
0
0
0
0
0
1
WE#
X
0
0
0
0
0
1
1
OE#
X
0
1
1
1
1
1
0
Table 2-8. AMI Access Types
BSEL1#
MFR4300 Data Sheet, Rev. 3
X
X
X
X
0
0
1
1
NOTE
NOTE
BSEL0#
X
X
X
X
0
1
0
1
Illegal
16-bit write to word address
8-bit write to even byte address
8-bit write to odd byte address
Illegal
no access
16-bit read from word address
no access
Type of Access
1
4
3
Freescale Semiconductor
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