RFW-D100 Vishay, RFW-D100 Datasheet - Page 20

• Manufacturer Part Number: RFW-D100
• Manufacturer: Vishay

Specifications of RFW-D100

• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Package Type: LQFP
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / Rohs Status: Supplier Unconfirmed

RFW-D100
Vishay RFWaves
Bit 2: RX_FIFO_RESET
This bit resets the RX_FIFO address pointers when set
to logic 1. This bit is set by the MCU and is cleared
automatically by the RFW-D100.
Bit 3: TX_FIFO_RESET
This bit resets the TX_FIFO address pointers when set
to logic 1. This bit is set by the MCU and is cleared
automatically by the RFW-D100.
Bit 4: STOP_RX
This bit stops receiving the current packet, resets the
RX_FIFO counters, and start new searches for
PREAMBLE. This bit is set by the MCU and is cleared
automatically by the RFW-D100.
Bits 5-7: PRE_MASK [0:2]
These bits determine the mask on PRE-H in
PREAMBLE correlation. Meaning, it determines the
SYSTEM CONTROL REGISTER 3 (SCR3)
This register is a read/write register.
Bit 1: EN_CAP_DISCH
Enables/disables the capacitor discharge mechanism
that discharges the reference capacitor after each
received packet:
1: Enables discharge.
0: Disables discharge.
This bit overrides bit 3.
Bit 2: CAP_DIS_PERIOD
Determines the capacitor discharge duration:
1: The pulse width is 72 clocks (3 µsec at 24 MHz
clock).
0: The pulse width is 36 clocks (3 µsec at 12 MHz
clock).
The recommended discharge period should be at least
3 µsec.
If the RFW-D100 oscillator frequency is bigger than
12 MHz
Bit 3: EN_ZERO_DISCH
Enables/disables zero counter capacitor discharge
mechanism:
1: Enables zero counter capacitor discharge.
0: Disables zero counter capacitor discharge.
www.vishay.com
20
Name
SCR3
Not Used
Bit 7
ZERO DISCH
CNT 2
Bit 6
For more information please contact: [e-mail]
ZERO DISCH
CNT 0
BIt 5
ZERO DISCH
CNT 0
Bit 4
size of the PREAMBLE in the receiver.
The PRE-L is always used in the PREAMBLE correla-
tion.
The RFW-D100 cuts off bit from PRE-H register,
starting from the MSB.
Default Value: 0 x 40
Bits 4-6: ZERO_DISCH_CNT [0:2]
Determines the number of consecutive zero bits that
will trigger a capacitor discharge by the zero counter
capacitor discharge mechanism.
Bit 7: Not in Use
This bit must be 0 at all times for the RFW-D100 to
work properly.
Default Value: 0 x 01
PRE_MASK 2 PRE_MASK 1 PRE_MASK 0
ZERO DISCH
CNT 2
EN ZERO
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
DISCH
Bit 3
ZERO DISCH
CNT 1
CAP DIS
PERIOD
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bit 2
ZERO DISCH
CNT 0
EN CAP
DISCH
Bit 1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Document Number 84675
Rev. 1.1, 22-Jan-07
PREAMBLE
Number of
Zeros
size
Bit 0
20
30
40
50
60
70
80
90
16
15
14
13
12
11
10
9