CYWUSB6935 Datasheet, PDF (22/33 Pages) Cypress Semiconductor – WirelessUSB LRTM 2.4-GHz DSSS Radio SoC

CYWUSB6935
8.0 Pin Descriptions
Table 8-1. Pin Description Table
Pin QFN
Name
Type
Default
Description
Analog RF
46 RFIN
Input
Input RF Input. Modulated RF signal received.
5
RFOUT
Output
N/A RF Output. Modulated RF signal to be transmitted.
Crystal / Power Control
38 X13
Input
N/A Crystal Input. (refer to Section 4.6).
35 X13IN
Input
N/A Crystal Input. (refer to Section 4.6).
26 X13OUT
Output/Hi-Z Output System Clock. Buffered 13-MHz system clock.
33 PD
Input
N/A Power Down. Asserting this input (low), will put the IC in the Suspend
Mode (X13OUT is 0 when PD is Low).
14 RESET
Input
N/A Active LOW Reset. Device reset.
34 PACTL
I/O
Input PACTL. External Power Amplifier control. Pull-down or make output.
SERDES Bypass Mode Communications/Interrupt
20 DIO
I/O
Input Data Input/Output. SERDES Bypass Mode Data Transmit/Receive.
19 DIOVAL
I/O
Input Data I/O Valid. SERDES Bypass Mode Data Transmit/Receive Valid.
21 IRQ
Output /Hi-Z Output IRQ. Interrupt and SERDES Bypass Mode DIOCLK.
SPI Communications
23 MOSI
Input
N/A Master-Output-Slave-Input Data. SPI data input pin.
24 MISO
Output/Hi-Z
Hi-Z Master-Input-Slave-Output Data. SPI data output pin.
25 SCK
Input
N/A SPI Input Clock. SPI clock.
22 SS
Input
N/A Slave Select Enable. SPI enable.
Power and Ground
6, 9, 16,
28, 29, 32,
41, 42, 44,
VCC
45
VCC
V_CC = 2.7V to 3.6V.
H
13 GND
GND
L
Ground = 0V.
1, 2, 3, 4, 7,
8, 10, 11,
12, 15, 17,
18, 27, 30, NC
31, 36, 37,
39, 40, 43,
47, 48
Must be tied to Ground.
N/A
N/A
Exposed GND
paddle
GND
L
Must be tied to Ground.
Document #: 38-16008 Rev. *C
Page 22 of 33