BCM43362KUBGT Datasheet, PDF (52/84 Pages) Cypress Semiconductor – Single-Chip IEEE 802.11™ b/g/n MAC/Baseband/Radio + SDIO

BCM43362 Data Sheet
Signal Assignments
Table 8: WLBGA Signal Descriptions (Cont.)
Ball # Signal Name
Type Description
GPIO Interface
E4
GPIO_0
I/O This pin is used as a strapping option to select between SDIO
mode (pull low) or SPI mode (pull high). It is strongly
recommended to use GPIO_0 only as a host bus interface
select. This pin has a weak internal pull-down resistor.
E5
GPIO_1/BTCX_FREQ
I/O General-purpose interface pin. This pin is high impedance on
power-up and reset. Subsequently, it becomes an input or
output through software control. This pin has a programmable
weak pull-up/down. This GPIO can be used as the out-of-band
WLAN_IRQ signal for SDIO/SPI. This pin can also be
programmed via software to behave as the BTCX_FREQ
coexistence signal.
H5
BTCX_TXCONF/GPIO_3 – Multiplexed BT_Coex/GPIO pins. When programmed as
J6
BTCX_STATUS/GPIO_4 –
GPIOs, pins are high impedance on power-up and reset.
J7
BTCX_RF_ACTIVE/
GPIO_5
–
Subsequently, they can be individually programmed to become
inputs or outputs through software control. They can also be
programmed to have internal pull-up or pull-down resistors.
Only GPIO 1, 3, 4, and 5 (total 4) can be used as GPIOs.
GPIO drive strength:
For 1.8V: 1.0 mA
For 2.5V: 2.5 mA
For 3.3V: 3.0 mA
Output slewing can be enabled or disabled by software; it is
enabled by default.
Note:
The following is a list of the internal pull-up/pull-down resistor strengths for the default strapping options
described in the GPIO section above:
Minimum
Typical
Maximum
– pup @ 1.8V
40K
59K
70K
– pdn @ 1.8V
39K
58K
67K
– pup @ 2.5V
40K
58K
69K
– pdn @ 2.5V
39K
58K
67K
– pup @ 3.3V
39K
– pdn @ 3.3V
39K
Miscellaneous Signals
J4
WL_RST_N
H5
BTCX_TXCONF/GPIO_3
58K
69K
58K
67K
I
Active low WLAN reset signal. Includes an internal 200 kΩ pull-
down resistor. Within 1.5 ms of WL_RST_N being driven high,
the PMU changes this from PD to High-Z. Software can
optionally enable the pull-down resistor.
VIH = 1.08V to 3.6V. VIL < 0.4V.
O Coexistence output giving Bluetooth permission to transmit.
This pin is muxed and can be changed to a GPIO via software.
Broadcom_®
February 13, 2015 • 43362-DS106-R
IEEE 802.11 b/g/n MAC/Baseband/Radio + SDIO
Page 51
BROADCOM CONFIDENTIAL