Signal Descriptions
5-36
MPC821FADS-DB USER’S MANUAL
MOTOROLA
5.1.5 MPC8xxFADS’s P8—Serial Port Expansion Connector
P8 is a 96-pin, 900, DIN 41612 connector that allows you to conveniently expand the
MPC821 serial ports. Although this connector resides on the motherboard, it is documented
here since its signal assignment is unique for each MPC821. The contents of Table 5-14
may conflict with the MPC8xxFADS schematic. If there is such a conflict, use this table to
resolve it.
Table 5-14. P13 Interconnect Signals
PIN
SIGNAL
INPUT/
OUTPUT
DESCRIPTION
A1
ETHRX
I/O
Ethernet Port Receive Data signal. See PM3(1).
A2
ETHTX
I/O
Ethernet Port Transmit Data signal. See PM3(5,11,42).
A3
IRDRXD
I/O
IrDA Port Receive Data signal. See PM3(9).
A4
IRDTXD
I/O
IrDA Port Transmit Data signal. See PM3(5,11,42).
A5
LD4
I/O
LCD Data line 4 signal. See PM3(117).
A6
LD3
I/O
LCD Data line 3 signal. See PM3(116).
A7
LD2
I/O
LCD Data line 2 signal. See PM3(115).
A8
LD1
I/O
LCD Data line 1 signal. See PM3(114).
A9
ETHTCK
I/O
Ethernet Port Transmit Clock signal. See PM3(27).
A10
ETHRCK
I/O
Ethernet Port Receive Clock signal. See PM3(29).
A11
—
—
Not connected.
A12
PA4
I/O
Port A Bit 4. BRGCLK2/TOUT2/CLK4/PA[4] on the MPC821. See
PM3(60).
A13
—
—
Not connected.
A14
L1RCLKB
I/O
Receive Clock for TDM B. See PM3(74).
A15
—
—
Not connected.
A16
A17
VCC
—
A18
PA9
I/O
Port A Bit 9. See PM3(15,21).
A19
L1RXDB
I/O
Receive Data signal for TDM B. See PM3(17).
A20
PA9
I/O
Port A Bit 9. See PM3(21).
A21
L1RXDA
I/O
Receive Data signal for TDM A. See PM3(23).
A22
GND
—
A23
GND
—
A24
IRQ7
I, L
Interrupt Request line 7. See PM2(130).
A25
FRZ
I/O
Freeze signal. See PM2(24).
A26
ETHEN
O
Ethernet Enable signal. See PM3(82).
A27
—
—
Not connected.
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Freescale Semiconductor, Inc.
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