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14
KX-PX1CX
4.5.
Microcomputer I/O table
4.5.1.
IC3 CPU (Main)
pin
No.
pin
assign
ment
Name of
the CPU
the CPU
terminal
VDE
VDD
Signal name
of the CPU
(IC3) on the
main board
Purpose of the signal
I/O
253
F24
A[10]
Local Bus Address
Local bus address signal
CPA[10]
Address for ROM
out
332
F23
A[11]
Local Bus Address
Local bus address signal
CPA[11]
Address for ROM
out
403
F22
A[12]
Local Bus Address
Local bus address signal
CPA[12]
Address for ROM
out
72
E26
A[13]
Local Bus Address
Local bus address signal
CPA[13]
Address for ROM
out
167
E25
A[14]
Local Bus Address
Local bus address signal
CPA[14]
Address for ROM
out
254
E24
A[15]
Local Bus Address
Local bus address signal
CPA[15]
Address for ROM
out
168
D25
A[16]
Local Bus Address
Local bus address signal
CPA[16]
Address for ROM
out
255
D24
A[17]
Local Bus Address
Local bus address signal
CPA[17]
Address for ROM
out
334
D23
A[18]
Local Bus Address
Local bus address signal
CPA[18]
Address for ROM
out
257
C23
A[19]
Local Bus Address
Local bus address signal
CPA[19]
Address for ROM
out
251
H24
A[2]
Local Bus Address
Local bus address signal
CPA[2]
Address for ROM
out
335
D22
A[20]
Local Bus Address
Local bus address signal
CPA[20]
Address for ROM
out
258
C22
A[21]
Local Bus Address
Local bus address signal
CPA[21]
Address for ROM
out
173
B22 A[22]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
80
A22 A[23]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
259
C21 A[24]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
174
B21 A[25]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
81
A21 A[26]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
406
E20 A[27]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
337
D20 A[28]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
260
C20 A[29]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
330
H23
A[3]
Local Bus Address
Local bus address signal
CPA[3]
Address for ROM
out
175
B20 A[30]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
177
B18 A[31]
Local
Bus
Address
Local bus address signal
N.C.
Not used
out
401
H22
A[4]
Local Bus Address
Local bus address signal
CPA[4]
Address for ROM
out
70
G26
A[5]
Local Bus Address
Local bus address signal
CPA[5]
Address for ROM
out
165
G25
A[6]
Local Bus Address
Local bus address signal
CPA[6]
Address for ROM
out
252
G24
A[7]
Local Bus Address
Local bus address signal
CPA[7]
Address for ROM
out
71
F26
A[8]
Local Bus Address
Local bus address signal
CPA[8]
Address for ROM
out
166
F25
A[9]
Local Bus Address
Local bus address signal
CPA[9]
Address for ROM
out
369
AA5
BCKI
Bit clock input
Input the bit clock used for audio
input
input
Low GND
Not used
in
295
AB4 BCKO/
MCLK
Bit clock output
Bit clock output for audio input
and output
and output
N.C.
Not used
out
69
H26 BCLKO Bus ClocK Out
(unusable)
Terminal that is prohibited from
being used
being used
N.C.
Not used
out
68
J26 BE[0]
Byte
Enable
BE[0]
→D[31:24]
When RSTOUT# is asserted, the
value of BE[0] is reflected to
LGCR.BED.
value of BE[0] is reflected to
LGCR.BED.
10k
Pull_Down
Pull_Down
Not used
in/out
163
J25 BE[1]
BE[1]
→D[23:16]
N.C. CL5
Not used
out
250
J24 BE[2]
BE[2]
→A[1]
BE[2]
→D[15:08]
CPA[1]
Address for ROM
out
164
H25 BE[3]
BE[3]
→A[0]
BE[3]
→D[07:00]
N.C. CL6
Not used
out
264
C16
BGNT#
Bus GraNT
This is a signal to indicate that the
local bus is open.
local bus is open.
N.C.
Not used
out
261
C19
BREQ#
Bus REQuest
This is a signal to input the
request to open the bus from the
bus master device.
request to open the bus from the
bus master device.
High 33k
Pul_UP
Pul_UP
Not used
in
85
A17
BS#
Bus cycle Start
Indicate the start of the bus cycle N.C.
Not used
out
84
A18 BSTACK# BurST ACKnowl-
edge
Input and output the burst trans-
fer permission
fer permission
High 33k
Pul_UP
Pul_UP
Not used
out
83
A19
BSTREQ# BurST REQuest
Input and output the burst trans-
fer request for the signal
fer request for the signal
High 33k
Pul_UP
Pul_UP
Not used
in
154
V25
CLKIN
CLocK INput
Supply the clock from the outside 64MHz(SSCG
)
CPU clock (64Mhz)
in
319
W23
CMODE[0] Clock MODE
Determine the operating fre-
quency ratio of the each part
inside LSI
quency ratio of the each part
inside LSI
High
Internal frequency mode
setting (H)
setting (H)
in
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