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15
KX-PX2CX
4.6.
Microcomputer I/O table
4.6.1.
IC101 Main (Print) CPU
Pin
No.
Pin
assign
ment
Name of the
CPU (IC101) ter-
minal
Signal function
name
Signal name
of the CPU
(IC101) on the
main board
Purpose of the signal
I/O
253
F24
A[10]
Local Bus Address
CPA[10]
Address for ROM
out
332
F23
A[11]
Local Bus Address
CPA[11]
Address for ROM
out
403
F22
A[12]
Local Bus Address
CPA[12]
Address for ROM
out
72
E26
A[13]
Local Bus Address
CPA[13]
Address for ROM
out
167
E25
A[14]
Local Bus Address
CPA[14]
Address for ROM
out
254
E24
A[15]
Local Bus Address
CPA[15]
Address for ROM
out
168
D25
A[16]
Local Bus Address
CPA[16]
Address for ROM
out
255
D24
A[17]
Local Bus Address
CPA[17]
Address for ROM
out
334
D23
A[18]
Local Bus Address
CPA[18]
Address for ROM
out
257
C23
A[19]
Local Bus Address
CPA[19]
Address for ROM
out
251
H24
A[2]
Local Bus Address
CPA[2]
Address for ROM
out
335
D22
A[20]
Local Bus Address
CPA[20]
Address for ROM
out
258
C22
A[21]
Local Bus Address
CPA[21]
Address for ROM
out
173
B22
A[22]
Local Bus Address
N.C.
Not used
out
80
A22
A[23]
Local Bus Address
N.C.
Not used
out
259
C21
A[24]
Local Bus Address
N.C.
Not used
out
174
B21
A[25]
Local Bus Address
N.C.
Not used
out
81
A21
A[26]
Local Bus Address
N.C.
Not used
out
406
E20
A[27]
Local Bus Address
N.C.
Not used
out
337
D20
A[28]
Local Bus Address
N.C.
Not used
out
260
C20
A[29]
Local Bus Address
N.C.
Not used
out
330
H23
A[3]
Local Bus Address
CPA[3]
Address for ROM
out
175
B20
A[30]
Local Bus Address
N.C.
Not used
out
177
B18
A[31]
Local Bus Address
N.C.
Not used
out
401
H22
A[4]
Local Bus Address
CPA[4]
Address for ROM
out
70
G26
A[5]
Local Bus Address
CPA[5]
Address for ROM
out
165
G25
A[6]
Local Bus Address
CPA[6]
Address for ROM
out
252
G24
A[7]
Local Bus Address
CPA[7]
Address for ROM
out
71
F26
A[8]
Local Bus Address
CPA[8]
Address for ROM
out
166
F25
A[9]
Local Bus Address
CPA[9]
Address for ROM
out
369
AA5
BCKI
Bit clock input
Low GND
Not used
in
295
AB4
BCKO/MCLK
Bit clock output
N.C.
Not used
out
69
H26 BCLKO
Bus ClocK Out
(unusable)
(unusable)
N.C.
Not used
out
68
J26 BE[0]
Byte
Enable
10k
Pull_Down
Pull_Down
Not used
in/out
163
J25
BE[1]
Byte Enable
N.C. CL5
Not used
out
250
J24
BE[2]
Byte Enable
CPA[1]
Address for ROM
out
164
H25
BE[3]
Byte Enable
N.C. CL6
Not used
out
264
C16
BGNT#
Bus GraNT
N.C.
Not used
out
261
C19 BREQ#
Bus
REQuest
High
33k
Pul_UP
Not used
in
85
A17
BS#
Bus cycle Start
N.C.
Not used
out
84
A18 BSTACK#
BurST ACKnowl-
edge
edge
High 33k
Pul_UP
Pul_UP
Not used
out
83
A19 BSTREQ#
BurST
REQuest
High
33k
Pul_UP
Not used
in
154
V25 CLKIN
CLocK
INput
64MHz(SSCG
)
)
CPU clock (64MHz)
in
319
W23
CMODE[0]
Clock MODE
High
Internal frequency mode setting (H)
in
240
W24
CMODE[1]
Clock MODE
High
Internal frequency mode setting (H)
in
153
W25
CMODE[2]
Clock MODE
Low
Internal frequency mode setting (L)
in
58
W26
CMODE[3]
Clock MODE
Low
Internal frequency mode setting (L)
in
181
B14
CPUHOLD
CPU Hold
N.C.
Not used
out
179
B16 CS#[0]
Chip
Select
ROMCS#:IC5
FROM Select
FROM Select
Selection for ROM
out
86
A16
CS#[1]
Chip Select
N.C. CL10
LCD chip select
out
411
E15
CS#[2]
Chip Select
N.C. CL9
Not used
out
342
D15
CS#[3]
Chip Select
N.C. CL8
Not used
out
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