Datasheet

DS2148/DS21Q48
25 of 73
Figure 3-1. Serial Port Operation for Read Access (R = 1) Mode 1
ICES = 1 (sample SDI on the falling edge of SCLK)
OCES = 1 (update SDO on rising edge of SCLK)
Figure 3-2. Serial Port Operation for Read Access Mode 2
ICES = 1 (sample SDI on the falling edge of SCLK)
OCES = 0 (update SDO on falling edge of SCLK)
12345678910111213141516
1
A
0
A
1
A
2
A
3
A
40B
D1 D2 D3 D4 D5 D6
SCL
K
SDI
SDO
C
S
(lsb) (msb)
D0
(lsb)
D7
(msb)
READ ACCESS ENABLED
12345678910111213141516
1
A
0
A
1
A
2
A
3
A
40 B
D1 D2 D3 D4 D5 D6
SCL
K
SDI
SDO
C
S
(lsb) (msb)
D0
(lsb)
D7
(msb)