Selectable Interfaces; Selectable Interfaces Supported By Cyw920706Wcdeval - Cypress WICED CYW920706WCDEVAL Hardware User's Manual

7.2

Selectable Interfaces

CYW20706 supports several other interfaces besides those identified in
several other interfaces, it cannot support all of its interfaces in a single hardware board design. Therefore, board designers
must select which interfaces to use in a given design.
The key limitation on the selectable interfaces is the number of available digital I/O pins. The selectable interfaces are
multiplexed to 12 digital I/O pins. The 12 digital I/O pins are: A8, B5, B6, B7, C5, C6, C7, C8, D6, F7, F8, and G8.
The following interfaces represent the superset of interfaces supported by CYW20706:

Multiple general purpose I/Os (GPIOs), identified as GPIO_Pxx, and also referred to as the low leakage LHL3 GPIOs
(LHL is a low leakage power island for GPIOs on the chip). For more information on GPIO signals, see Section 8
Information".

Four PWM outputs

A peripheral UART (or PUART). This PUART is for attachment to microcontroller units (MCUs) or onboard peripherals.

A Serial Peripheral Interface (SPI). This is a second SPI interface that is identified as SPI1 (and sometimes called
Spiffy1). It can be a master or a slave.

Multiple A/D converter inputs

Multiple auxiliary clock outputs

An infrared learning (IR_RX) input and playback (IR_TX) output

A keyboard scan output (KSO3)

Four optical control outputs (QOC0 through QOC3) for use in quadrature or rotary encoders.\

A 60 Hz input (60Hz_main) to a zero-crossing detector

Two triac control outputs

Two external Transmit/Receive (T/R) switch control outputs (TX_PD and ~TX_PD)

Multiple inputs from quadrature detectors (QDX0, QDX1, QDY0, QDY1, QDZ0, and QDZ1)

A shared PCM or I

A Bluetooth clock request (BT_CLK_REQ) for a shared-clock application

A Low Power Oscillator (LPO) input

An Inter-Integrated Circuit (I
These selectable interfaces are mapped to the 12 digital I/O pins. Many signal functions are supported at each pin, but a
system designer must select a single function per pin. See Section 8
function to I/O pin assignments.

7.3 Selectable Interfaces Supported by CYW920706WCDEVAL

The CYW920706WCDEVAL board supports all of the fixed interfaces (see Section
subset of the selectable interfaces (see Section
The CYW920706WCDEVAL board supports the following selectable interfaces:

SPI1 master

PUART
2 2

I S, I C, PWM, PCM

BT_GPIO_P5/P15 connected via jumper to VDDIO which can be used for voltage detect

BT_GPIO_P4/P6 to control external LEDs

BT_GPIO_P7 to monitor SW6 button depression
CYW920706WCDEVAL Hardware User Guide
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2
S interface
2
C) serial interface, also called Broadcom Serial Control (BSC) interface
7.2 "Selectable
Doc. No.: 002-16535 Rev. **
Fixed Interfaces. Although CYW20706 supports
"GPIO Information" for detailed information on signal-
7.1 "Fixed
Interfaces") supported by CYW20706.
6BCYW20706 Interfaces
"GPIO
Interfaces") but only supports a
17