Datasheet

NXP Semiconductors
88W8977
2.4 GHz/5 GHz Dual-band 1x1 Wi-Fi 4
®
and Bluetooth
®
5 Combo SoC
88W8977 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
Product short data sheet Rev. 1 — 13 July 2020
25 / 81
4.5 Configuration pins
Table 16 shows the pins used as configuration inputs to set the parameters following
a reset. The definition of these pins changes immediately after reset to their usual
function. To set a configuration bit to 0, attach a 100 kΩ resistor from the pin to ground.
No external circuitry is required to set a configuration bit to 1.
Table 16. Configuration pins
Configuration Bits Pin Name Configuration Function
CON[1] RF_CNTL2_N
CON[0] RF_CNTL0_N
Firmware Boot Options
No hardware impact. Software reads and boots
accordingly. See Table 17
Note: Boot code needs to use this host boot strap
status to decide the correct boot sequence.
Table 17. Firmware boot options
Strap value Wi-Fi Bluetooth/
Bluetooth LE
Firmware
download
Firmware
download mode
Number of SDIO
functions
00 -- -- -- -- --
01 -- -- -- -- --
10 SDIO UART SDIO + UART Parallel/Serial 1 (Wi-Fi)
11 SDIO SDIO SDIO + SDIO Parallel/Serial 2 (Wi-Fi,
Bluetooth)