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Connec-
Ter-
Exter-
Each
tion cir-
minal
nal ter-
circuit
cuit
num-
minal
board
board
ber
name
func-
tion ter-
minal
name
DC I/O
Y25
IOE2_X4
IOE2_X[4
circuit
]
board
Differential
IOE2_DI4
I/O circuit
22[4]
board
Analog I/O
IOE2_AD
circuit
_SDI
board
DC I/O
Y24
IOE2_X5
IOE2_X[5
circuit
]
board
Differential
IOE2_DI4
I/O circuit
22[5]
board
Analog I/O
IOE2_AD
circuit
_CSL[2]
board
DC I/O
Y23
IOE2_X6
IOE2_X[6
circuit
]
board
Differential
IOE2_DI4
I/O circuit
22[6]
board
Analog I/O
IOE2_AD
circuit
_SCLK_B
board
DC I/O
AA24
IOE2_X7
IOE2_X[7
circuit
]
board
Differential
IOE2_DI4
I/O circuit
22[7]
board
Analog I/O
IOE2_AD
circuit
_BUSY
board
DC I/O
Y26
IOE2_X
IOE2_XO
circuit
OEL0
EL[0]
board
Differential
IOE2_DI
I/O circuit
O485_EN
board
Analog I/O
IOE2_AD
circuit
0_DOUT
board
A
DC I/O
AA26
IOE2_X
IOE2_XO
circuit
OEL1
EL[1]
board
Differential
IOE2_DI
I/O circuit
O485_I
board
Analog I/O
IOE2_AD
circuit
0_DOUT
board
B
Func-
I/O di-
I/O di-
I/O
tions
rec-
rec-
type
tion
tion
for
each
cir-
cuit
board
DC input
Input/
Input
3.3-V
[4]
output
LVCM
OS
Differential
(RS-422)
input [4]
ADC serial
Output
data
output
(common
to 3 chips)
DC input
Input/
Input
3.3-V
[5]
output
LVCM
OS
Differential
(RS-422)
input [5]
ADC chip
Output
select [2]
DC input
Input
Input
3.3-V
[6]
LVCM
OS
Differential
(RS-422)
input [6]
Serial read
back clock
DC input
Input
Input
3.3-V
[7]
LVCM
OS
Differential
(RS-422)
input [7]
ADC busy
input
(common
to 3 chips)
DC input
Input/
Output
3.3-V
output
output
LVCM
enable [0]
OS
Differential
(RS-485) I/
O direction
ADC0
Input
serial data
input A
DC input
Input/
Output
3.3-V
output
output
LVCM
enable [1]
OS
Differential
Input
(RS-485)
input
ADC0
serial data
input B
I/O
Logic
PU/
Initial state
volt-
PD in
Re-
age
FPGA
set-
ting
3.3V
PU
L
3.3V
PU
H
Negative
3.3V
PU
H
3.3V
PU
H
Positive
L
3.3V
Negative
PU
L
Positive/
negative
3.3V
Negative
PU
H
Appendix 6 A List of FPGA External Terminals
Operating
frequency
After
reset
re-
lease
L
20MHz
4.17MHz
H
12.5MHz
L
20MHz
4.17MHz
H
12.5MHz
H
20MHz
4.17MHz
A
L
25MHz
L
20MHz
4.17MHz
12.5MHz
H
20MHz
L
Asynchronous
12.5MHz
H
20MHz
L
10MHz
12.5MHz
APPX
675
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