beautypg.com

Figure 19-8, Figure 19-9 – Rainbow Electronics DS26503 User Manual

Page 118

background image

DS26503 T1/E1/J1 BITS Element

118 of 123

Figure 19-8. SPI Interface Timing Diagram, CPHA = 0, BIS[1:0] = 10






















Figure 19-9. SPI Interface Timing Diagram, CPHA = 1, BIS[1:0] = 10

MSB

LSB

BITS 6-1

SLAVE LSB

SLAVE MSB

BITS 6-1

2

1

3

4

4

5

5

9

11

NOTE

CS

INPUT

CLK INPUT

CPOL = 0

CLK INPUT

CPOL = 1

MISO

OUTPUT

MOSI

INPUT

6

7

10

8

10

Note: Not defined, but usually LSB of character previously transmitted.

MSB

LSB

BITS 6-1

SLAVE MSB

SLAVE LSB

BITS 6-1

2

1

3

4

4

5

5

6

7

8

9

11

11

10

NOTE

CS

INPUT

CLK INPUT

CPOL = 0

CLK INPUT

CPOL = 1

MISO

INPUT

MOSI

OUTPUT

Note: Not defined, but usually MSB of character just received.