User`s manual

SUPPORT INFORMATION
M68332BCC/D 5-4 MOTOROLA
REV 1
Table 5-2. P2 Expansion Connector Pin Assignments
Pin Number
Signal Mnemonic
Signal Name And Description
1, 2 GND GROUND
3, 4 +5V +5 VOLT INPUT POWER
5 — 20 D0 — D15 DATA BUS – 16 bi-directional data pins.
21 RXD DI RECEIVE DATA DEVELOPMENT INTER-FACE –
BCCDI receive data.
22 TXD DI TRANSMIT DATA DEVELOPMENT INTER-FACE –
BCCDI transmit data.
23 MODB DI MODE B DEVELOPMENT INTERFACE – BCCDI
mode B.
24 XMT 232 TRANSMIT DATA – Serial data output signal.
25
CSBOOT
BOOT CHIP SELECT – An active-low output chip
select.
26 RCV 232 RECEIVE DATA – Serial data input signal.
27 R/
W
READ/WRITE – Active-high output signal that indicates
the direction of data transfer on the bus.
28 MODCK CLOCK MODE SELECT – Active-high input signal that
selects the source of the internal system clock.
29
TSTME
/
TSC
TEST MODE ENABLE – Active-low input signal that is
a hardware enable for test mode.
THREE STATE CONTROL – When TSC is 8 volts (1.6
X +5V), this input signal forces all output drivers to a
high-impedance state.
30 — 34 A23/
CS10
,
A22/
CS9
,
A21/
CS8
,
A20/
CS7
,
A19/
CS6
ADDRESS BUS 19—23 – Three-state output address
bus.
CHIP SELECTS 6—10 – Output signals that select
peripheral/memory devices at programmed addresses.