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MOTOROLA
NllSl1 / ISDN I / F
RXD1 /l1RXD
TXD1 /l1TXD
RCU<1 / L1CU<
TCLK1 /L1SYO/SOS1
CD1 /l1SY1
CTS1 /l1GR
RTS1 /L1RQ/GCIDCL
RXD2/PAO
TXD2/PA1
RCLK2/PA2
TCLK2/PA3
CTS2/PA4
RTS2/PA5
CD2/PA6
SOS2/PA7
N
RXD3/PA8
TXD3/PA9
RCLK3 / PA10
TCLK3 / PA11
CTS3/SPRXD
RTS3/SPTXD
CD3/SPCU<
PA12
DREQ/PA13
DACK/PA14
DONE/PA15
IACK7 /PBO
IACK6/PB1
IACK1
/PB2
TIN/PB3
TOUT1
/P84
TIN2/PBS
TOUT2/
PB6
WDOG/P87
~
...-
.....
......
......
......
..._NMSl2 / Pl!.,
··~
.....
......
.....
...-
~
--
......
...-
~
.....
--"'
--
.....
11613 /SCP I PIO
~
..._
......
--
......
. .
-+
......
+
~
......
......
IDMA/PAIO
--
......
......
-+
~
IACK/PBIO
--
.....
..._
.....
.....
.....
TIMER/PBIO
...-
...-
.....
...-
~
.....
J.INTERRUP' 2 _
PBIO
PB8
PB9
PB10
PB11
.....
.....
.....
.....
.....
Ill'
132LEAD
PART
I+
CLOCKS
......
......
1lDDRESS~
l'f
-)
DATA BUS.A
'I
)
BUS CONTROL
...-
~
...-
~
...-
~
.....
.....
.....
.....
--"'
......
......
~
EXTAL
XTAL
Cl.KO
A23·A1
015-00
AS
RiW
UDS/AO
LOS/OS
DTACK
RMC/IOUT1
IAC
BCLR
BUS ARlllTRA TON
. .
.....
SYSTEM
......
.....
.....
...-
...-
......
--"'
iiR
BG
BGACK
CONTROL
......
.....
......
RESET
HALT
BEAR
eusw
DISCPU
INTERRUPT
CO
NTROL
IPLO/IRQ1
IPl.1 /IRQ6
1Pl.2/IRQ7
FCO
.....
I..<.
.....
..._
.....
.....
--
~
~
CHIP SELECT
:;;.
-'V
TESTING
...-
iA
-;>
I~
~
1;:
:
~
l'I
FC1
FC2
AVEC /IOUTO
N.C(3)
GND(13)
VDD(8)
Figure 5-1. Functional Signal Groups
MC68302 USER'S MANUAL
5-3
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