TMS3705
11-07-22-003 – SCBS881B –JANUARY 2010–REVISED APRIL 2010
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TIMING DIAGRAMS (continued)
TxCT
SCIO
Diag
byte
Start
byte
data bytes
tinit
tch
tprog
tR
tdiag
M.C.W. CHARGE
PHASE
WRITE
PROG.
RESPONSE
Init. transmission
NOTE: M.C.W.: Mode control write (to write into the mode control register)
PROG.: Program phase of transponder
Figure 4. Write/Read Mode (Writing Into Mode Control Register)
TxCT
tinit
tmcr tmcr
PHASE
CHARGE
Low Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7
Start Bit
Test Bit
Init. transmission
End transmission
Figure 5. Mode Control Write Protocol (NRZ Coding)
TXCT
PHASE
Figure 6. Transponder Write Protocol
14
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