Data Sheet

WL1801MOD,
WL1805MO
D
,
WL1831MO
D
,
WL1835MOD
SWRS152M – JULY 2013 – REVISED OCTOBER 2017
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Terminal Configuration and Functions 7
Copyright © 2013–2017, Texas Instruments Incorporated
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Product Folder Links: WL1801MOD WL1805MOD WL1831MOD
WL1835MOD
Table 4-1. Pin Attributes (continued)
PIN NAME
PIN
NO.
TYPE/
DIR
SHUTDOWN
STATE
AFTER
POWER
UP
(1)
VOLTAGE
LEVEL
CONNECTIVITY
(2)
DESCRIPTION
(3)
1801 1805 1831 1835
WL_SDIO_D3_1V8 13 I/O
Hi-Z PU
1.8 V v v v v
WLAN SDIO data bit
3. Changes state to
PU at WL_EN or
BT_EN assertion for
card detects. Later
disabled by software
during initialization.
WL_IRQ_1V8 14
O PD
0 1.8 V v v v v
WLAN SDIO out-of-
band interrupt line.
Set to rising edge
(active high) by
default. (To extract
the debug option
WL_RS232_TX/RX
interface out, pull up
the IRQ line at power
up before applying
enable.)
RF_ANT2 18 ANA – x v x v
2.4-GHz ANT2 TX,
RX; 2.4-GHz
secondary antenna
MRC/MIMO only.
GPIO2 26 I/O
PD PD
1.8 V v v v v
WL_RS232_RX
(when WLAN_IRQ =
1 at power up)
GPIO1 27 I/O
PD PD
1.8 V v v v v
WL_RS232_TX
(when WLAN_IRQ =
1 at power up)
RF_ANT1 32 ANA – v v v v
2.4-GHz WLAN main
antenna SISO,
Bluetooth
WL_UART_DBG 42
O PU PU
1.8 V v v v v Option: WLAN logger
Bluetooth Functional Block: Int Signals
BT_UART_DBG 43
O PU PU
1.8 V x x v v
Option: Bluetooth
logger
BT_HCI_RTS_1V8 50
O PU PU
1.8 V x x v v
UART RTS to host.
NC if not used.
BT_HCI_CTS_1V8 51
I PU PU
1.8 V x x v v
UART CTS from host.
NC if not used.
BT_HCI_TX_1V8 52
O PU PU
1.8 V x x v v
UART TX to host. NC
if not used.
BT_HCI_RX_1V8 53
I PU PU
1.8 V x x v v
UART RX from host.
NC if not used.
BT_AUD_IN 56
I PD PD
1.8 V x x v v
Bluetooth PCM/I2S
bus. Data in. NC if not
used.
BT_AUD_OUT 57
O PD PD
1.8 V x x v v
Bluetooth PCM/I2S
bus. Data out. NC if
not used.
BT_AUD_FSYNC 58 I/O
PD PD
1.8 V x x v v
Bluetooth PCM/I2S
bus. Frame sync. NC
if not used.
BT_AUD_CLK 60 I/O
PD PD
1.8 V x x v v
Bluetooth PCM/I2S
bus. NC if not used.