Users Manual Part 1

SIM8260A_Hardware Design_V1.05
www.simcom.com 24 / 122
W82 control interface
2
WL_SW_CTRL
K49
DI
P3
W82 switch control
If unused, please keep
open
SDX_TO_WL_CTI
M49
DO
P3
W82 GPIO
WL_TO_SDX_CTI
L47
DI
P3
W82 GPIO
WL_PA_MUTING
H45
DO
P3
WLAN XFEM control for PA
mute
SLEEP_CLK
J51
DO
Sleep clock output for W82
only
BT_EN
N51
DO
P3
W82 BT enable
If unused, please PD 10k
WL_EN
K45
DO
P3
WLAN enable
WL_LAA_RX
J47
DO
P3
WLAN XFEM control for LAA
receiver
SIM8260C not support
LAA, unused
please PD 10k to GND
WL_LAA_AS_EN
L51
DO
P3
WLAN LAA AS enable
COEX_UART_TX
D
BA7
DO
P3
LTE&WLAN coexistence
data transmit
LTE coexistence signals
COEX_UART_RX
D
BA9
DI
P3
LTE&WLAN coexistence
data receive
WL_TXEN_TO_N
79
BA37
DI
P3
From Module N79 to the
W82
N79 and WIFI
coexistence signals
SIM8260E/A unused,
please keep open
N79_TO_WL_TXE
N
BA29
DO
P3
From the W82 to Module
N79
WL_LAA_TX_EN
R51
DO
P3
From Module to the W82
SIM8260C/E/A
unused, please keep
open
WL_TX_EN
AY14
DI
P3
From the W82 to Module
SIM8260C unused,
please keep open
SDIO interface
SDIO_VDD
3
F7
PI
1.8/3.
0V
Power input for internal SDIO
circuit
SDIO_DATA0
B1
DIO
P2
SDC data bit 0 or
eMMC data bit 0
Required 45Ω
impedance and length
match<1mm
Layout bus length
<15mm(208MHZ)
<100mm(50MHZ)
SD card can support
1.8V/3.3V, but eMMC
only support 1.8V
SDIO_DATA1
C1
DIO
P2
SDC data bit 1 or
eMMC data bit 1
SDIO_DATA2
D3
DIO
P2
SDC data bit 2 or
eMMC data bit 2
SDIO_DATA3
F3
DIO
P2
SDC data bit 3 or
eMMC data bit 3
SDIO_CMD
G5
DIO
P2
SDC command output
SDIO_CLK
E5
DO
P2
SDC clock output
SDIO_VDD_EN
H7
DO
P3
Enable the SD card power or
eMMC data bit 4
SDIO_DET
E1
DI
P3
SD card insertion detect or
eMMC data bit 5