Data Sheet

Copyright © Bridgetek Pte Ltd 13
BT81X (815/6) Advanced Embedded Video Engine Datasheet
Version 1.0
Document No.: BRT_000220 Clearance No.: BRT#126
Figure 4-1 SPI Master and Slave in the Master Read Case
In the DUAL channel mode, MISO (MSB) and MOSI are used while in the QUAD channel mode. IO3
(MSB), IO2, MISO and MOSI are used.
Figure 4-2 illustrates a direct connection to a 1.8-3.3V IO MPU/MCU with single or dual SPI interface.
Figure 4-3 illustrates a direct connection to a 1.8-3.3V IO MPU/MCU with Quad SPI interface.
Figure 4-2 Single/Dual SPI Interface connection
SPI Master drives
the data bus
SS
WR /
Addr2
Addr
1
Addr
2
Dum
my
Data
X
Data
Y
Data
0
SPI Slave drives the
data bus
Bus not
driven
SPI Master changes
data ports into inputs
SPI Slave changes
data ports into outputs
SPI Slave resets data
ports into inputs
GND
GND
SS#
MISO
MOSI
SCLK
PD#
INT#
CS_N
MISO
MOSI
SCK
PD_N
INT_N
BT815/6
1.8-3.3V
VCCIO1
3.3V
VCC
4.7k
MPU/MCU