mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 196

• Manufacturer Part Number: mfr4200
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

MFR4200 FlexRay Communication Controller
3.7.2.1
1
196
I – input pin; O – output pin; I/O – input/output pin
XADDR[14:19]
Signal name
IF_SEL[0:1]
ACS[0:5]
RD/WR#
AD[0:15]
LSTRB#
ECLK#
IRQ#
HCS12 Interface Signal and Pin Descriptions
ADDR/DATA[0:15]
XADDR[14:19]
HCS12 External Bus
RD/WR#
LSTRB#
Table 3-21. HCS12 Interface Signal and Pin Descriptions
ECLK#
Name
IRQ#
–
–
I/O*
I/O
O
O
O
O
–
–
MFR4200 Data Sheet, Rev. 0
I
XADDR[14:19]
IF_SEL[0:1]
ECLK_CC#
FlexRay CC MCU
PAD[0:15]
RW_CC#
INT_CC#
ACS[0:5]
LSTRB#
Interface Pin
Name
I/O
I/O
O
I
I
I
I
I
I
1
Multiplexed external address data bus (AD0
is the LSB; AD15 is the MSB)
Internal bus clock output – This output line is
the clock system frequency of the HCS12
HCS12 interface expanded address lines –
(XADDR14 is the LSB of the HCS12 interface
expanded address lines)
HCS12 interface, address select inputs.
ACS5: MSB of the address select inputs
Read/Write – Indicates the direction of the
data transfer for a transaction. A logic one
indicates a read from a slave device; a logic
zero indicates a write to a slave device.
Low-byte Strobe – indicates the type of bus
access
Interrupt Request (level sensitive) – One of
the external lines that can request, by means of
the internal interrupt controller, a service
routine from the HCS12.
Interface Select – FlexRay CC MCU interface
configuration pins
Function Description
Freescale Semiconductor