Figure 10: rtm timing, Figure 10, Figure 11 – Rainbow Electronics 71M6542G User Manual
Page 26: Adc timing ce timing rtm timing
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© 2008–2011 Teridian Semiconductor Corporation
v1.1
Figure 10: RTM Timing
CK32
MUX STATE
0
MUX_DIV
Conversions,
MUX_DIV
=4 is shown
Settle
ADC MUX Frame
ADC EXECUTION
S
MUX_SYNC
S
CE_EXECUTION
RTM
140
MAX CK COUNT
0
450
150
900
1350
1800
ADC0
ADC1
ADC2
ADC3
CK COUNT = CE_CYCLES + 1CK for each ADC transfer
NOTES:
1. ALL DIMENSIONS ARE 5MHZ CK COUNTS.
2. THE PRECISE FREQUENCY OF CK IS 150*CRYSTAL FREQUENCY = 4.9152MHz.
3. XFER_BUSY OCCURS ONCE EVERY SUM_SAMPS CODE PASSES.
CE_BUSY
XFER_BUSY
INITIATED BY A CE OPCODE AT END OF SUM INTERVAL
ADC TIMING
CE TIMING
RTM TIMING
1
2
3
Figure 11: Timing relationship between ADC MUX, CE, and RTM Serial Transfer
CKTEST
RTM
FLAG
RTM DATA0 (32 bits)
L
SB
S
IGN
L
SB
S
IGN
RTM DATA1 (32 bits)
L
SB
L
SB
S
IGN
S
IGN
RTM DATA2 (32 bits)
RTM DATA3 (32 bits)
0
1
30
31
0
1
30
31
0
1
30
31
0
1
30
31
FLAG
FLAG
FLAG
MUX_STATE
S
MUX_SYNC
CK32