Freescale Semiconductor MPC8260-TCOM, Руководство пользователя

Страница: 18 / 53

MPC8260TCOM User’s Manual PRELIMINARY
FUNCTIONAL DESCRIPTION
18
connector contains all MPC8260 parallel ports. These connectors also include the power signals for the
8260TCOM board (ground, 3.3V and 5V).
3•10 Ports Selection
The following table shows all the ports that are used on the 8260TCOM. It includes there function for each
used module. The table includes:
1. The port column, i.e. the port number.
2. The module name function which contains the 8 T1 ports (8 column).
3. The ATM 8 bit port on the ADS (this column is a dark column to accent the ADS function which uses
FCC1); each named cell of the column describes the function.
4. The Fast Ethernet address ’1’ column use FCC1.
5. The Fast Ethernet address ’0’ column which is also a dark one since it is on the ADS; it use FCC2.
6. The Fast ethernet address ’2’ column use FCC3.
7. The DS3 _1 column use FCC2.
8. The DS3_2 column use FCC3.
In each table row there are I or O signs at the right side of the function name meaning that this signal is an
output from the MPC8260 device (O) or an input to the MPC8260 (I). In some rows there are several I/O
signs which mean the respective port can be use for several function. The user should avoid conflicts; as
an example if the ATM is used on the ADS it is not possible to use the FE address 1. This table can help
the user to define the desire module without having a conflict, or if there is a problem in the definition the
user can know which one of the module can cause the problem.
PC9 and PC10 are the MII MDIO and MDC signals; these signals are common to the 3 FE modules - the
one on the ADS and the two on the TCOM.
Table 4: Ports Function Signals
Ports
T1
1
A1
T1
2
B1
T1
3
C1
T1
4
D1
T1
5
A2
T1
6
B2
T1
7
C2
T1
8
D2
ADS ATM8
FE
1
FCC1
ADS FE 0
FCC2
FE
2
FCC3
TDM1
DS3
1
FCC2
TDM2
DS3
2
FCC3
PA2 (clock20) TXCLK I TXCLK I
PA6 RSYNC I RSYNC I
PA7 TSYNC I TSYNC I
PA8 RXD I RXD0 I
PA9 TXD O TXD0 O
PA14 RXD4 I RXD3 I
PA15 RXD5 I RXD2 I
PA16 RXD6 I RXD1 I
PA17 RXD7 I RXD0 I
PA18 TXD7 O TXD0 O
PA19 TXD6 O TXD1 O
PA20 TXD5 O TXD2 O
PA21 TXD4 O TXD3 O
PA26 RxClav I RXER I
PA27 RxSoc I RXDV I
PA28 RxEnb O TXEN O
PA29 TxSoc O TXER O
PA3(clock19) RXCLK I RXD1 I
PA30 TxClav I CRS I
PA31 TxEnb O COL I
PB4 RSYNC I TXD3 O RSYNC I
PB5 TSYNC I TXD2 O TSYNC I
PB6 RXD I TXD1 O RXD0 I
PB7 TXD I TXD0 O TXD0 I
PB8 RSYNC I RXD0 I
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
.
..