MFR4300 Datasheet, PDF (48/266 Pages) Freescale Semiconductor, Inc – FlexRay Communication Controllers

Device Overview
Table 2-8. AMI Access Types
CE# WE# OE# BSEL#[1] BSEL#[0]
Type of Access
0
0
0
X
0
0
1
0
0
0
1
0
0
0
1
1
X
Illegal
0
16-bit write to word address¹
1
8-bit write to even byte address²
0
8-bit write to odd byte address³
0
0
1
1
1
Illegal
0
1
1
X
0
1
0
X
X
no access
X
16-bit read from word address⁴
1
X
X
X
X
no access
1 _{Write data from D[15:8] to even byte address and from D[7:0] to odd byte address.}
2 _{Write data from D[15:8].}
3 _{Write data from D[7:0].}
4 _{Read data from even byte address at D[15:8] and from odd byte address at D[7:0].}
• 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.
NOTE
For the AMI, D0 is the LSB of the 16-bit data bus.
NOTE
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).
MFR4300 Data Sheet, Rev. 1
48
Freescale Semiconductor