User's Manual

FLC-WFM301 Datasheet
Flaircomm Microelectronics Confidential
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9
GND
Ground
Ground
10
WP
Reserved for Flaircomm used in production.
Connect to I2C EEPROM WP pin. Internally
pulled high through a 100 k resistor.
11
DEBUG_SPI_MISO
O
DEBUG Data Out
12
NC3
NC
13
SD_DATA[3]
I/O
SDIO 4 bit Mode : Data line bit [3]
SDIO 1 bit Mode : Reserved
SDIO SPI Mode : Card select (Active low)
CSPI Mode: Chip Select
14
SD_DATA[1]
I/O
SDIO 4 bit Mode : Data line bit [1]
SDIO 1 bit Mode : Interrupt
SDIO SPI Mode : Reserved
CSPI Mode: Interrupt
15
SD_CMD
I/O
SDIO 4 bit Mode : Command/Response
SDIO 1 bit Mode : Command Line
SDIO SPI Mode : Data Input
CSPI Mode: MOSI, Data Input
16
SD_DATA[0]
I
SDIO 4 bit Mode : Data Line Bit [0]
SDIO 1 bit Mode : Data Line
SDIO SPI Mode : Data Output
CSPI Mode: MISO, Data output
17
GND
Ground
Ground
18
VDD_SDIO
Power
Voltage Supply for Host Interface (1.7V ~ 3.6V).
19
SD_DATA[2]
I/O
SDIO 4 bit Mode : Data Line Bit [2] or Read Wait
(optional)
SDIO 1 bit Mode : Read Wait (optional)
SDIO SPI Mode : Reserved
CSPI Mode: Not Used
20
GND
Ground
Ground
21
SD_CLK
I
SDIO 4 bit Mode : Clock Input
SDIO 1 bit Mode : Clock Input
SDIO SPI Mode : Clock Input
CSPI Mode: Clock Input
22
GPIO[1]
I/O
General Purpose Input/Output (LED indicator)
23
DEBUG_SPI_MOSI
I
Debug Mode Data In
24
DEBUG_SPI_CLK
I
Debug Mode Clock
25
VDD_DIG
Power
Digital Core Power Supply. This pin is for bypass
cap only. Connect a 2.2uF bypass cap to this pin.
26
VDD_PADS
Power
1.8V power Supply for SPI, RES# and PIO[0] –
PIO[7]
27
GND
Ground
Ground