7-5
BRC-300/300P
BRU-300/300P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RS-232 LINE DRIVER/RECEIVER
—TOP VIEW—
PIN
NO.
I/O
SIGNAL
PIN
NO.
I/O
SIGNAL
PIN
NO.
I/O
SIGNAL
PIN
NO.
I/O
SIGNAL
C2
+
C2
_
V
_
RIN1
RIN2
RIN3
RIN4
RIN5
DOUT1
DOUT2
DOUT3
DIN3
DIN2
DIN1
O
O
O
O
O
O
O
ROUT5
ROUT4
ROUT3
ROUT2
ROUT1
ROUT2B
INVALID
I
I
—
—
—
—
—
FORCEOFF
FORCEON
C1
_
GND
V
CC
V
+
C1
+
—
—
—
I
I
I
I
I
O
O
O
I
I
I
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
INPUTS
DIN1 - DIN 3
FORCEOFF
FORCEON
RIN1 - RIN5
OUTPUTS
DOUT1 - DOUT3
INVALID
ROUT1 - ROUT5
OTHERS
C1
+
, C1
_
,
C2
+
, C2
_
V
_
V
+
: RS-232 DRIVER
: FORCE OFF
: FORCE ON
: RS-232 RECEIVER
: RS-232 DRIVER
: INVALID
: RS-232 RECEIVER
: EXTERNAL CAPACITOR CONNECTION
: NEGATIVE OUTPUT POWER SUPPLY
: POSITIVE OUTPUT POWER SUPPLY
1
2
3
4
8
7
6
5
CS
IN
DATA
OUT
V
CC
GND
V
CC
V
CC
DCLK
IN
ASDI
IN
INPUTS
ASDI
CS
DCLK
OUTPUT
DATA
: AS DATA
: CHIP SELECT
: CLOCK
: DATA
SERIAL CONFIGURATION EEPROM
—TOP VIEW—
CONTOL
LOGIC
I/O SHIFT
REGISTER
DATA
BUFFER
MEMORY
ARRAY
DECODE
LOGIC
STATUS
REGISTER
ADDRESS
COUNTER
CS
DCLK
1
6
DATA
ASDI
2
5
IC
MAX3243CDBR (TI)
EPCS1SI8N (ALTERA)
x
1
1
0
0
0
0
0
1
1
1
1
1
1
POWER OFF
NORMAL OPERATION
(AUTO POWER DOWN DISABLE)
NORMAL OPERATION
(AUTO POWER DOWN ENABLE)
POWER OFF
(BY AUTO POWER DOWN)
x
0
1
0
1
0
1
FORCEON
FORCEOFF
VALID RIN
RS-232 LEVEL
DIN
DRIVER BLOCK
HI-Z
1
0
1
0
HI-Z
HI-Z
x
x
x
YES
YES
NO
NO
DOUT
DRIVER STATUS
x
x
0
1
0
1
NC
0
0
1
1
1
1
1
POWER OFF
(ROUT2B ACTIVE)
NORMAL OPERATION
(AUTO POWER DOWN
DISABLE/ENABLE)
0
1
0
0
1
1
NC
RIN1,
RIN3 - RIN5
FORCEOFF
VALID RIN
RS-232 LEVEL
RIN2
RECEIVER BLOCK
0
1
0
0
1
1
0
x
x
YES
YES
YES
YES
NO
ROUT2B
RECEIVER STATUS
HI-Z
HI-Z
1
0
1
0
1
ROUT
DIN1
DIN2
DIN3
14
13
12
FORCEOFF
FORCEON
19
20
ROUT1
19
ROUT2
ROUT3
ROUT4
ROUT5
18
17
16
15
AUTO POWER DOWN
RIN1
RIN2
RIN3
RIN4
RIN5
4
5
6
7
8
INVALID
21
DOUT1
DOUT2
DOUT3
9
10
11
ROUT2B
20
0
1
x
HI-Z
NC
: LOW LEVEL
: HIGH LEVEL
: DON’T CARE
: HIGH IMPEDANCE
: NO CONNECTION OR CONNECTED TO DRIVER OFF