Akai ADP-841, Service Manual

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MT1389 B/ C
PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE
5
MTK Confidential A
FOR SZ_MTK USE ONLY
Pin Main Alt. Type Description
78 IOA1
Inout
2~16MA, SR
PU
Microcontroller address 1 / IO
53
IOA2
Inout
2~16MA, SR
PU
Microcontroller address 2 / IO
54 IOA3
Inout
2~16MA, SR
PU
Microcontroller address 3 / IO
55 IOA4
Inout
2~16MA, SR
PU
Microcontroller address 4 / IO
56 IOA5
Inout
2~16MA, SR
PU
Microcontroller address 5 / IO
57 IOA6
Inout
2~16MA, SR
PU
Microcontroller address 6 / IO
58 IOA7
Inout
2~16MA, SR
PU
Microcontroller address 7 / IO
67 A16
Output
2~16MA, SR
Flash address 16
92 A17
Output
2~16MA, SR
Flash address 17
60 IOA18
Inout
2~16MA, SR
SMT
Flash address 18 / IO
61 IOA19
Inout
2~16MA, SR
SMT
Flash address 19 / IO
76 IOA20
Inout
2~16MA, SR
SMT
Flash address 20 / IO
89 IOA21 V_ADIN0
Inout
2~16MA, SR
SMT
1) Flash address 21 / IO
2) While External FLASH size <= 2MB:
I) Version AD input port 0, or
II) GPIO
90 ALE
Inout
2~16MA, SR
PU, SMT
Microcontroller address latch enable
79 IOOE#
Inout
2~16MA, SR
SMT
Flash output enable, active low / IO
66 IOWR#
Inout
2~16MA, SR
SMT
Flash write enable, active low / IO