BCM20706 Data Sheet
Timing and AC Characteristics
Table 19: SPI Mode 1 and 3
Reference Characteristics
Minimum
Maximum
Unit
1
Time from slave assert SPI_INT to master assert
SPI_CSN (DirectRead)
0
∞
ns
2
Time from master assert SPI_CSN to slave assert
SPI_INT (DirectWrite)
0
∞
ns
3
4
5
6
Time from master assert SPI_CSN to first clock edge
Setup time for MOSI data lines
20
8
∞
ns
ns
ns
ns
1/2 SCK
1/2 SCK
100
Hold time for MOSI data lines
8
Time from last sample on MOSI/MISO to slave
deassert SPI_INT
0
7
8
Time from slave deassert SPI_INT to master
deassert SPI_CSN
0
∞
∞
ns
ns
Idle time between subsequent SPI transactions
1 SCK
Figure 11: SPI Timing, Mode 1 and 3
SPI_CSN
8
SPI_INT
(DirectWrite)
2
7
6
SPI_INT
(DirectRead)
1
SPI_CLK
3
(Mode 1)
SPI_CLK
(Mode 3)
4
5
-
Invalid bit
Invalid bit
-
First bit
Last bit
Last bit
SPI_MOSI
SPI_MISO
Not Driven
Not Driven
First bit
Broadcom®
May 19, 2016 • 20706-DS202-R
Bluetooth SoC
Page 43
BROADCOM CONFIDENTIAL
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