W55RFS27R3C Datasheet, PDF (5/13 Pages) Winbond – Super-Regeneration RF Receiver

W55RFS27R3C
W55RFS27R3C Pad Description, continued.
SYMBOL PAD NO. I/O
A/D
R
23
I/O
D
L
B
F
RXD
VSPLY
24
I/O
D
25
I/O
D
26
I/O
D
27
I/O
D
28
Power A
FUNCTIONAL DESCRIPTION
(manual-mode) Decoder Right-turn output
(uC-mode) HOP_CLK (toggle every 20 ms for better
performance or fix at “0” or “1”)
(manual-mode) Decoder Left-turn output
(uC-mode) Set to “0”.
(manual-mode) Decoder Backward output
(uC-mode) Set to “1”.
(manual-mode) Decoder Forward output
(uC-mode) Set to “0”.
Receiver data output / Power on trapping of LNA
Power input
1.2.2 Power-On Trapping Function Description
POWER-
TRAPPING PIN
NAME
TRAPPING
STATE
FUNCTION DESCRIPTION
1
RXD
0
Enable LNA
Disable LNA
RECOMMENDED
USAGE
Enable LNA
1
F1*
0
Not Used
Not Used
Disable (Set to “0”)
1
Enable Frequency Hopping
F2
Enable Frequency
0
Disable Frequency Hopping
Hopping
* Note: Currently, F1 does not support any functions, but it should be set to “0” when the W55RFS27R3C is powered on.
Publication Release Date: May 31, 2005
-5-
Revision A1