Linear Technology LTC2983 - Page 15

LTC2983
15
2983fc
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OVERVIEW
Figure 2. Memory Write Operation
Figure 1. Memory Read Operation
SCK
CS
RECEIVER SAMPLES
DATA ON RISING EDGE
TRANSMITTER TRANSITIONS
DATA ON FALLING EDGE
SDI I7 I6 I5 I4 I3 I2 I1 I0
0 0 0 0 0 0 1 1
0 0 0 0 A11 A10 A9 A8
16-BIT ADDRESS FIELD
USER MEMORY READ TRANSACTION
FIRST DATA BYTE
SUBSEQUENT
DATA BYTES
MAY FOLLOW
SPI INSTRUCTION BYTE
READ = 0x03
A7 A6 A5 A4 A3 A2 A1 A0
SDO
2983 F01
D7 D6 D5 D4 D3 D2 D1 D0
• • •
• • •
SCK
CS
RECEIVER SAMPLES
DATA ON RISING EDGE
TRANSMITTER TRANSITIONS
DATA ON FALLING EDGE
SDI I7 I6 I5 I4 I3 I2 I1 I0
0 0 0 0 0 0 1 0
0 0 0 0 A11 A10 A9 A8
16-BIT ADDRESS FIELD
USER MEMORY WRITE TRANSACTION
FIRST DATA BYTE
SUBSEQUENT
DATA BYTES
MAY FOLLOW
SPI INSTRUCTION BYTE
WRITE = 0x02
A7 A6 A5 A4 A3 A2 A1 A0
2983 F02
• • •
D7 D6 D5 D4 D3 D2 D1 D0
• • •