61
MZ-R910
•
IC801 CXD2677-204GA (SYSTEM CONTROLLER, DIGITAL SIGNAL PROCESSOR, 16M BIT D-RAM)
Pin No.
Pin Name
I/O
Description
1
NC
O
Load address strobe signal output terminal for D-RAM Not used
2
NC
I
Test input terminal for D-RAM Not used
3 to 7
NC
O
Address signal output terminal for D-RAM Not used
8, 9
NC
I/O
Two-way data bus terminal for D-RAM Not used
10, 11
DRAMVDD0, 1
Power supply terminal (for D-RAM) (+2.2V)
12, 13
DRAMVSS0, 1
Ground terminal (for D-RAM)
14, 15
NC
I/O
Two-way data bus terminal for D-RAM Not used
16 to 19
NC
O
Address signal output terminal for D-RAM Not used
20
NC
O
Column address strobe signal output terminal for D-RAM Not used
21
NC
I
Test input terminal for D-RAM Not used
22, 23
NC
O
Address signal output terminal for D-RAM Not used
24
DVSS0
Ground terminal (for the DSP block)
25
DVDD0
Power supply terminal (for the DSP block) (+1.1V)
26
OFTRK
I
Off track signal input from the DSP monitor (3)
27
SSB DATA
I/O
SSB data input/output with the RF amplifier
28
SSB CLK
O
SSB clock output to the RF amplifier
29
VREC PWM
O
PWM signal output for the Over write head drive power supply voltage control to the power
control
30
VL PWM
O
PWM signal output for the laser power supply voltage control to the power control
31
VC PWM
O
PWM signal output for the system power supply voltage control to the power control
32
VD PWM
O
VD power supply voltage control signal output to the DC/DC converter
33
NC
Not used
34
IFVDD0
Power supply terminal (for the microcomputer I/F block) (+1.7V)
35
IFVSS0
Ground terminal (for the microcomputer I/F block)
36
OPT DET
I
DIN plug detection signal input terminal H : DIN plug detect
37
XJACK DET
I
LINE IN plug detection signal input terminal L : LINE or OPT plug detect
38
XMIC DET
I
Microphone plug detection signal input terminal L : microphone plug detect
39
OPEN CLOSE
SW
I
Open/close detection switch of the upper panel input terminal
L : when upper panel close
40
SET CODE0
I
Input terminal for the set (fixed at L in this set)
41
SET CODE1
I
Input terminal for the set (open in this set)
42, 43
SET CODE1, 2
I
Input terminal for the set (fixed at L in this set)
44
XPATCH
I
Patch function detection terminal L : patch function Not used
45
SI0
I
Serial data input from the nonvolatile memory and liquid crystal display element module
46
SO0
O
Serial data output to the nonvolatile memory, A/D converter and liquid crystal display element
module
47
SCK0
O
Serial clock signal output to the nonvolatile memory, A/D converter and liquid crystal display
element module
48
XGUM ON
I
Rechargeable battery detection switch input terminal L : rechargeable battery in detect
49
BEEP
O
Beep sound control signal output to the headphone amplifier
50, 51
TEST1, TEST0
I
Input terminal for the main test (normally fixed at L )
52
KDO
O
Data output terminal (fixed at L in this set)
53
KRB
I
Ready/busy signal input terminal (fixed at L in this set)
54
KCLK
O
Clock signal output terminal Not used
55
KCS
O
Chip select signal output terminal Not used
Содержание MZ-R910
Страница 75: ...75 MZ R910 MEMO ...
