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BCM4354 bảng dữ liệu(PDF) 68 Page - Cypress Semiconductor

tên linh kiện BCM4354
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External Coexistence Interface
BCM4354 Data Sheet
BROADCOM CONFIDENTIAL
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 67
External Coexistence Interface
An external handshake interface is available to enable signaling between the device and an external co-located
wireless device, such as GPS, or LTE, to manage wireless medium sharing for optimal performance.
Figure 24 and Figure 25 on page 67 show the LTE coexistence interface (including UART) for each BCM4354
package type. See Table 26: “GPIO Alternative Signal Functions,” on page 120 for further details on multiplexed
signals, such as the GPIO pins.
See Table 15: “UART Timing Specifications,” on page 57 for the UART baud rate.
Figure 24: Broadcom GCI Mode LTE Coexistence Interface
Figure 25: Legacy 3-Wire LTE Coexistence Interface
WLAN
GCI
LTE/IC
UART_IN
UART_OUT
BTFM
Notes:
 OR’ing to generate ISM_RX_PRIORITY for ERCX_TXCONF or BT_RX_PRIORITY is achieved by
setting the GPIO mask registers appropriately.
 SECI_OUT and SECI_IN are multiplexed on the GPIOs.
SECI_OUT
SECI_IN
BCM4354
Note: OR’ing to generate WCN_PRIORITY FOR ERCX_TXCONF or BT_RX_PRIORITY is achieved by
setting the GPIO mask registers appropriately.
WLAN
GCI
LTE/IC
BT/FM
WCN_PRIORITY
GCI_GPIO_2
GCI_GPIO_1
GCI_GPIO_0
MWS_RX, LTE_PRIORITY
LTE_FRAME_SYNC
BCM4354



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