CYW43362 datasheet(13/51 Pages) CYPRESS

13 / 51 page

Document No. 002-14779 Rev. *H

Page 13 of 51

CYW43362

Figure 7. Signal Connections to SDIO Host (SD 4-Bit Mode)

Figure 8. Signal Connections to SDIO Host (SD 1-Bit Mode)

4.2 External Coexistence Interface

To manage wireless medium sharing for optimal performance, an external coexistence interface is provided that enables signaling

between the CYW43362 and one or two external collocated wireless devices such as Bluetooth and/or WiMax. Note that three of the

External Coexistence Interface pins are multiplexed with GPIOs. By default, the pins are BT_COEX pins. Through software they can

be changed to GPIOs. The fourth BT_COEX signal is also multiplexed with a GPIO, but this one is a GPIO by default and can be

changed via software to be BTCX_FREQ. See Pinout and Signal Descriptions on page 23 for more details.

The signals in Table 6 can be enabled by software.

Table 6. Coexistence Signals

Signal

Description

BTCX_STATUS

Coexistence signal indicating Bluetooth priority status and TX/RX direction.

BTCX_RF_ACTIVE

Coexistence signal indicating that Bluetooth is active.

BTCX_FREQ

Indicates that the coexisting Bluetooth is about to transmit on a restricted channel.

BTCX_TXCONF

Coexistence output giving Bluetooth permission to transmit.

SD Host

CYW43362

CMD

DAT[3:0]

CLK

SD Host

CYW43362

CMD

CLK

DATA

IRQ

CYW43362 Datasheet(PDF) 13 Page - Cypress Semiconductor