In Figures 2, 3, 4 and 5 the designation of the state of the MISO signal is "Hi-Z" before an. after the SS signal is low. This means the output driving the signal is turned completely off and not driving the signal either high or low. "Hi-Z" means "High Impedance". Also in the figures, the designation of the state of the MOSI signal is "XXX" before and after the SS signal is low. This means the state of the signal is "Unknown" or "Don't Care". If there are multiple Slaves on the bus, why must a Slave turn off the driver (Hi-Z) on the.. MISO signal when their SS signal is high

Computer Networking: A Top-Down Approach (7th Edition)
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Chapter1: Computer Networks And The Internet
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nCs
CLK
MOSI
OKAS
10
XXXX
MISO
OxBA
H-Z
Hi-Z
11
10
11
Figure 2. SPI Mode 0, CPOL = 0, CPHA = 0: CLK idle state = low, data sampled on rising
edge and shifted on falling edge.
CLK
MOSI
MISO
Figure 3. SPI Mode 1, CPOL = 0, CPHA = 1: CLK idle state = low, data sampled on the
falling edge and shifted on the rising edge.
CLK
MOSI
MISO
Figure 4. SPI Mode 2, CPOL = 1, CPHA = 1: CLK idle state = high, data sampled on the
falling edge and shifted on the rising edge.
CLK
MO
MISO
Figure 5. SPI Mode 3, CPOL = 1, CPHA = 0: CLK idle state = high, data sampled on the
rising edge and shifted on the falling edge.
Transcribed Image Text:nCs CLK MOSI OKAS 10 XXXX MISO OxBA H-Z Hi-Z 11 10 11 Figure 2. SPI Mode 0, CPOL = 0, CPHA = 0: CLK idle state = low, data sampled on rising edge and shifted on falling edge. CLK MOSI MISO Figure 3. SPI Mode 1, CPOL = 0, CPHA = 1: CLK idle state = low, data sampled on the falling edge and shifted on the rising edge. CLK MOSI MISO Figure 4. SPI Mode 2, CPOL = 1, CPHA = 1: CLK idle state = high, data sampled on the falling edge and shifted on the rising edge. CLK MO MISO Figure 5. SPI Mode 3, CPOL = 1, CPHA = 0: CLK idle state = high, data sampled on the rising edge and shifted on the falling edge.
Question 2
In Figures 2, 3, 4 and 5 the designation of the state of the MISO signal is "Hi-Z" before an. after the SS signal is low. This means
the output driving the signal is turned completely off and not driving the signal either high or low. "Hi-Z" means "High
Impedance".
Also in the figures, the designation of the state of the MOSI signal is "XXX" before and after the SS signal is low. This means the
state of the signal is "Unknown" or "Don't Care".
If there are multiple Slaves on the bus, why must a Slave turn off the driver (Hi-Z) on the. MISO signal when their SS signal is high
Transcribed Image Text:Question 2 In Figures 2, 3, 4 and 5 the designation of the state of the MISO signal is "Hi-Z" before an. after the SS signal is low. This means the output driving the signal is turned completely off and not driving the signal either high or low. "Hi-Z" means "High Impedance". Also in the figures, the designation of the state of the MOSI signal is "XXX" before and after the SS signal is low. This means the state of the signal is "Unknown" or "Don't Care". If there are multiple Slaves on the bus, why must a Slave turn off the driver (Hi-Z) on the. MISO signal when their SS signal is high
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