1-32
XV-D721BK
XV-D723GD
61
62
63
64
65
66,67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90~93
94
95~98
99
100
WAIT2
WAITIN
VDD
GND
TEST_IN
NC
VDD
GND
CLKOCTL
NC
OSCI
OSCO
NC
VDD
GND
33OUT
16OUT
VDD
GND
VDD
GND
STERR_IN
SYNC_IN
STCLK_IN
DACK_IN
REQ_OUT
VDD
GND
STD0~3_IN
GND
STD4~7_IN
VDD
GND
Non connect
Glue logic input signal (connect to 27 pin)
Power supply
Connect to ground
Connect to ground
Non connect
Power supply
Connect to ground
Input terminal for crystal-oscillator circuit on/off control
Non connect
Crystal oscillation terminal (input side)
Crystal oscillation terminal (output side)
Non connect
Power supply
Connect to ground
Oscillation output terminal
Oscillation output terminal
Power supply
Connect to ground
Power supply
Connect to ground
Presence of data error from front end
Sector sink signal from front end
Data clock signal from front end
Signal which shows effective data from front end
Request signal for forwarding control to front end
Power supply
Connect to ground
Data input from front end (8 bits)
Connect to ground
Data input from front end (8 bits)
Power supply
Connect to ground
-
I
-
-
I
-
-
-
I
-
I
O
-
-
-
O
O
-
-
-
-
I
I
I
I
O
-
-
I
-
I
-
-
Pin No. I/O
JCV8005-2 2/2
2.Pin function
Symbol
Description
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
Q0
D0
D1
Q1
Q2
D2
D3
Q3
GND
VCC
Q7
D7
D6
Q6
Q5
D5
D4
Q4
LE
OE LE D
HXX
LLX
LHL
LHH
Z
Qn
L
H
INPUTS
OUTPUTS
TC74LCX373FT-X(IC512,IC513)
1.Pin layout 2.Truth table
X : Don't care
Z : High impedance
Qn : Q outputs are latched at the time when the LE input is
taken to a low logic level.