hip9010 Intersil Corporation, hip9010 Datasheet - Page 5

• Manufacturer Part Number: hip9010
• Description: Engine Knock Signal Processor
• Manufacturer: Intersil Corporation

Pin Descriptions
NUMBER
15 and 16
5 and 6
PIN
10
11
12
14
17
18
19
20
13
7
8
9
1
2
3
4
INT/HOLD
TRANSDUCERS
SYMBOL
OSCOUT
FIGURE 2. SIMPLIFIED BLOCK DIAGRAM OF THE HIP9010 IN AN AUTOMOTIVE APPLICATION
INTOUT
OSCIN
MISO
MOSI
TEST
S1FB
S0FB
V
GND
S1IN
S0IN
V
SCK
NC
CS
NC
MID
DD
4-5
5V power input.
This terminal is tied to ground.
This terminal is tied to the internal mid-supply generator and is brought out for supply bypassing by a 0.022 F
capacitor.
Buffered output of the integrator.
These terminals are not internally connected. DO NOT USE.
Selects whether the chip is in the Integrate Mode (Input High) or in the Hold Mode (Input Low).
A low input on this pin enables the chip to communicate over the SPI bus.
Input to inverter used for the oscillator circuit. A 4MHz crystal or ceramic resonator is connected between this
pin and pin 10. To bias the inverter, a 1.0M to 10M resistor is usually connected between this pin and pin 10.
Output of the inverter used for the oscillator. See pin 9 above.
Output of the chip SPI data bus. It is the inversion of the chip DATAIN line. This is an open drain output. The
output must be disabled by placing the CS High when the chip is not selected.
Input of the chip SPI data bus. Data length is eight bits.
Input from the SPI clock. Normally high, the data is clocked to the chip internal circuitry on the rising clock edge.
A low on this pin places the chip in the test mode. For normal operation this terminal is tied high or left open.
These terminals are not internally connected. DO NOT USE.
Inverting input to sensor one amplifier. A resistor is tied from this summing input to the transducer. A second
resistor is tied between this terminal and terminal 18, S1FB to establish the gain of the amplifier.
Output of the sensor one amplifier. This terminal is used to apply feedback.
Output of the sensor zero amplifier. This terminal is used to apply feedback.
Inverting input to sensor zero amplifier. A resistor is tied from this summing input to the transducer. A second
resistor is tied between this terminal and terminal 19, S0FB to establish the gain of the amplifier.
C2, 3.3nF
C1, 3.3nF
C3, 0.022 F
R2
R1
20pF
20pF
4MHz
+5V
R3
R4
1M
HIP9010
V
V
GND
S1IN
S1FB
S0IN
S0FB
OSCIN
OSCOUT
DD
MID
HIP9010
CONVERTER
INTOUT
DESCRIPTION
A/D
MICROPROCESSOR
INT/HOLD
MOSI
MISO
TEST
SCK
CS
SPI BUS