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ATR2434 データシートの表示(PDF) - Atmel Corporation

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ATR2434
Atmel
Atmel Corporation Atmel
ATR2434 Datasheet PDF : 35 Pages
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Figure 6. SPI Burst Write Sequence
SCK
SS
MOSI
M ISO
cmd
addr
data from m cu 1
data from m cu 1+N
DIR INC
1
1
A5
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
DIO Interface
The DIO communications interface is an optional SERDES bypass data-only transfer
interface. In receive mode, DIO and DIOVAL are valid after the falling edge of IRQ,
which clocks the data as shown in Figure 7. In transmit mode, DIO and DIOVAL are
sampled on the falling edge of the IRQ, which clocks the data as shown in Figure 8. The
application MCU samples the DIO and DIOVAL on the rising edge of IRQ.
Figure 7. DIO Receive Sequence
IRQ
DIOVAL
DIO
v0
v1 v2
v3
v4
v5
v6
v7
v8
v9 v10 v11 v12 v13 v14 v...
data to mcu
d0
d1 d2
d3
d4
d5
d6
d7
d8
d9 d10 d11 d12 d13 d14 d...
Figure 8. DIO Transmit Sequence
IRQ
DIOVAL
DIO
v0
v1 v2
v3 v4
v5
v6
v7
v8
v9 v10 v11 v12 v13 v14 v...
data from mcu
d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d...
8 ATR2434 [Preliminary]
4822C–ISM–09/04

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