mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 40

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

Device Overview
configured to provide either high or reduced output drive, and also to enable or disable either pullup or
pulldown resistors on the pins.
BSEL[1:0]# are AMI byte select signals.
DBG[0:1] are debug strobe point output signals. The functions output on these pins are selected by the
debug port control register. Refer to
2.4.3.6
D[15:8]/PB[0:7] are general purpose input or output pins. Their functions are selected by the IF_SEL[1:0]
pins. Refer to
to provide either high or reduced output drive, and also to enable or disable either pullup or pulldown
resistors on the pins.
D[15:8] are data signals of the AMI interface. D15 is the MSB of the AMI data bus.
PB[0:7] are HCS12 interface multiplexed address/data signals in the HCS12 Host interface mode of
operation. PB0 is the LSB of the HCS12 address/data bus.
2.4.3.7
D[7:0]/PA[0:7] are general purpose input or output pins. Their functions are selected by the IF_SEL[1:0]
pins. Refer to
to provide either high or reduced output drive, and also to enable or disable either pullup or pulldown
resistors on the pins.
D[7:0] are data signals of the AMI interface. D0 is the LSB of the AMI data bus.
PA[0:7] are HCS12 interface multiplexed address/data signals in the HCS12 Host interface mode of
operation. PA7 is the MSB of the HCS12 address/data bus.
2.4.3.8
The function of this pin is selected by IF_SEL[1:0] pins. Refer
more information. The pin can be configured to enable or disable either a pullup or pulldown resistor on
the pin.
CE# is an AMI interface transfer size input signal. It indicates the size of the requested data transfer in the
current bus cycle.
LSTRB is an HCS12 interface low-byte strobe input signal. It indicates the type of bus access.
2.4.3.9
The function of this pin is selected by the IF_SEL[1:0] pins. Refer to
Interface” for more information. The pin can be configured to enable or disable either a pullup or pulldown
resistor on the pin.
WE# is an AMI interface write select signal. It strobes the valid data provided by the host on the D[15:0]
pins during write operations to the MFR4300 memory.
40
D[15:8]/PB[0:7] — AMI Data Bus, HCS12 Multiplexed Address/Data Bus
D[7:0]/PA[0:7] — AMI Data Bus, HCS12 Multiplexed Address/Data Bus
CE#/LSTRB — AMI Chip Select, HCS12 Low-byte Strobe
WE#/RW_CC# — AMI Write Enable, HCS12 Read/Write Select
Section 2.7, “External Host
Section 2.7, “External Host
Section 3.4.16, “Strobe Signal Support”
MFR4300 Data Sheet, Rev. 3
Interface” for more information. These pins can be configured
Interface” for more information. These pins can be configured
Section 2.7, “External Host
Section 2.7, “External Host
for more information.
Freescale Semiconductor
Interface” for