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
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4.4.3 General Purpose I/O (GPIO)/LED interface
Table 3. General purpose I/O/LED interface
Pin Name Supply No Pad Power
State
Reset
State
HW State PD State PD Prog Internal PU/
PD
PU PD
GPIO[15] VIO tristate input input tristate yes nominal PU yes yes
GPIO Mode: GPIO[15] (input/output)
JTAG Mode: JTAG_TMS, JTAG controller select (input)
GPIO[14] VIO tristate input input tristate yes nominal PU yes yes
GPIO Mode: GPIO[14] (input/output)
JTAG Mode: JTAG_TCK, JTAG test clock (input)
GPIO[13] VIO tristate input input tristate yes nominal PU yes yes
GPIO Mode: GPIO[13] (input/output)
GPIO[12] VIO tristate input input tristate yes nominal PU yes yes
GPIO Mode: GPIO[12] (input/output)
GPIO[11] VIO tristate input input tristate yes weak PU no no
GPIO Mode: GPIO[11] (input/output)
UART Mode: UART_RTSn (output) (active low)
Bluetooth External Coexistence Mode: BT_REQ. See Section 4.4.6 "Bluetooth external coexistence interface".
GPIO[10] VIO tristate input input tristate yes nominal PU yes yes
GPIO Mode: GPIO[10] (input/output)
UART Mode: UART_CTSn (input) (active low)
Bluetooth External Coexistence Mode: BT_GRANTn. See Section 4.4.6 "Bluetooth external coexistence interface".
GPIO[9] VIO tristate input input tristate yes nominal PU no no
GPIO Mode: GPIO[9] (input/output)
UART Mode: UART_SIN (input)
Bluetooth External Coexistence Mode: BT_STATE. See Section 4.4.6 "Bluetooth external coexistence interface".
GPIO[8] VIO tristate input input tristate yes weak PU no no
GPIO Mode: GPIO[8] (input/output)
UART Mode: UART_SOUT (output)
Bluetooth External Coexistence Mode: BT_FREQ. See Section 4.4.6 "Bluetooth external coexistence interface"
GPIO[7] VIO tristate input input tristate yes nominal PU no no
GPIO Mode: GPIO[7] (input/output)
PCM Mode: PCM_SYNC (input/output)
• Output if master
• Input if slave
GPIO[6] VIO tristate input input tristate yes nominal PU yes yes
GPIO Mode: GPIO[6] (input/output)
PCM Mode: PCM_CLK (input/output)
• Output if master
• Input if slave
GPIO[5] VIO tristate input input tristate yes weak PU yes yes