PM9607AP
IN CIRCUIT EEPROM CONFIGURATION
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ISOLATED PC INTERFACE MODULE
OPERATION
The isolator module connects to a standard PC printer port by
means of an extender cable on the one side and to the
PM9607AP on the other side. The PC is completely isolated
form the evaluation module and can be used to program the
EEPROM on the PM9607AP module safely.
The SA9607P is designed to be the bus master and does not
support multi master mode. Resistor R22 is used to overdrive
the clock signal of the SA9607P during programming.
The EEPROM remains on the PCB and is reprogrammed via
the IIC bus.
No Name Function
1 VDD Positive supply
2
3
4
5
6
7
CNF A positive edge on CNF with DIRO high will
trigger a configuration reload
SDA Serial data pin
SCK Serial clock pin
FOUT LED pin of device
DIRO DIRO need to be high before CNF is pulsed
to trigger a reload
VSS Negative supply voltage
Table 5: Pin description of the CAL connector
DIRO
CNF
DR-01578
Figure 5: Wave forms describing the configuration trigger
VDD
TEST
R4
2.2k
15
16
ILQ74
VSS
SCL
R1
11
12
ILQ74
Pin 4
SDO
R10
220R
R8
SDI
680R
4
3
ILQ74
O1B
14
13
VSS
R2
470R
R9
Pin 13
Pin 18..25
PC VSS
O3
4N35
VSS
FIN
680R
O2
4N35
R3
470R
DR-01579
Pin 2
T1
R5
680R
8
7
O1D
10
9
U1
CNF
ILQ74
Pin 9
SCK
R6
220R
1
2
O1A
U3
SCL
R22
VDD
Q1
BC327
DIRO
820R
U1
SCL
Pin 3
T2
R7
680R
5
6
O1C
R11
10k
VSS
SDA
4.7k
U1
DIRO
7 Core cable
VDD
U3
SDA
R21
U1
SDA
Pin 7..8
Pin 12
VDD
U1
LED
FOUT
PC Printer Port
On Interface module
On PM9607AP module
Figure 6: Schematic diagram of the IIC opto-isolator module as well as relevant components on the PM9607AP module
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