PCD3316T NXP Semiconductors, PCD3316T Datasheet - Page 4

• Manufacturer Part Number: PCD3316T
• Manufacturer: NXP Semiconductors

Specifications of PCD3316T

• Process Technology: CMOS
• Operating Frequency (max): 3580kHz
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Philips Semiconductors
7. Functional description
9397 750 04824
Product specification
6.2 Pin description
7.1 Preprocessor and analog inputs
Table 2:
The preprocessor for the CAS detection and the FSK receiver incorporates an
Analog-to-Digital Converter (ADC) and a digital bandpass filter.
The LOWBAT input of the PCD3316 can be used for low battery detection. The
voltage on the LOWBAT pin is compared with an internal voltage reference circuit.
When the LOWBAT voltage drops below the reference voltage, the Status register,
bit 5 is set to logic 1.
The PCD3316 can be forced in a Power-down state by switching off the 3.58 MHz
system clock and the ADC. This is done by setting Mode register 2, bit 7 (CIDMD2.7)
to logic 0. To guarantee correct operation the following order of actions must be
performed (see also
The two low power comparators (inputs POL0 and POL1) and the 32.768 kHz clock
are always active.
Symbol
HXIN
HXOUT
IRQ
SCL
SDA
LXIN
LXOUT
DGND
AGND
POL1
POL0
LOWBAT
CASIN
FSKIN
FSKIN+
V
1. Switch off CAS and FSK detection (if turned on)
2. Read the interrupt register (thus clearing pending interrupts generated by the
3. Switch off the 3.58 MHz oscillator by clearing bit 7 of Mode register 2.
DD
CAS and FSK detector)
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Section 7.8
I/O
I
O
O
I
I/O
I
O
I
I
I
I
I
I
11 March 1999
Description
3.58 MHz crystal oscillator input
3.58 MHz crystal oscillator output
interrupt output; programmable active HIGH or active LOW
serial clock line of I
serial data line of I
32.768 kHz crystal oscillator input
32.768 kHz crystal oscillator output
digital ground
analog ground
polarity detector input 1
polarity detector input 0
low battery detector input
input pin for CAS signal
negative input for FSK signal
positive input for FSK signal
supply
about interrupts):
2
2
C-bus
C-bus
© Philips Electronics N.V. 1999. All rights reserved.
PCD3316
CIDCW receiver
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