AMC7823 Datasheet, PDF (11/48 Pages) Texas Instruments – ANALOG MONITORING AND CONTROL CIRCUIT

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AMC7823
SLAS453A – APRIL 2005 – REVISED OCTOBER 2005
SS
t_SCK
t_Lead
t_wsck
t_f
t_r
SCLK
t_wsck
t_su
t_hi
t_Lag
t_td
MOSI Don’t Care
Command
BIT 15 (MSB)
Command
BIT 14 ...1
Command
BIT 0 (LSB)
Don’t Care
READ COMMAND FROM THE HOST
t_A
t_v
t_ho
t_dis
MISO
Hi−Z
MISO is in Hi-Z Before Finishing Address Decoding
DATA OUT
BIT 15 (MSB)
DATA OUT
BIT 14
DATA OUT
BIT 13 ... 1
DATA READ FROM AMC7823 REGISTERS
DATA OUT
BIT 0 (LSB)
Hi−Z
Note: If SS is High, MISO is in Hi-z
Figure 1. Read Operation (SPI)
SS
SCLK
t_sck
t_Lead
t_wsck
t_f
t_r
t_wsck
t_su
t_hi
MOSI Don’t Care
Command
Bit 15 (MSB)
Command
Bit 14 . . 1
Command
Bit 0 (LSB)
WRITE COMMAND FROM HOST
t_Lag
t_td
Data In
Bit 15 (MSB)
Data In
Bit 14 . . 1
Data In
Bit 0 (LSB)
DATA WRITTEN INTO AMC7823 REGISTERS
Don’t Care
MISO
ELDAC
CONVERT
Hi−Z
Figure 2. Write Operation (SPI)
t_WLDAC
t_CONVERT
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