AD6636BBC Analog Devices Inc, AD6636BBC Datasheet - Page 52

• Manufacturer Part Number: AD6636BBC
• Description: IC RSP 6CHAN 150MSPS 256CSPBGA
• Manufacturer: Analog Devices Inc
• Series: AD6636r

Specifications of AD6636BBC

• Rf Type: Cellular, CDMA2000, EDGE, GPRS, GSM
• Number Of Mixers: 1
• Secondary Attributes: Down Converter
• Current - Supply: 450mA
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 256-CSPBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD6636
SPI Mode Timing
In SPI mode, the SCLK should run only when data is being
transferred and SCS is logic low. If SCLK runs when SCS is logic
high, the internal shift register continues to run and instruction
words or data are lost. No external framing is necessary. The
SCS pin can be pulled low once for each byte of transfer, or kept
low for the whole length of the transfer.
MSBFIRST
MSBFIRST
SMODE
SMODE
MODE
MODE
SCLK
SCLK
SDO
SDO
SCS
SCS
SDI
SDI
A7
A0
A6
A1
A5
A2
BLOCK END ADDRESS
BLOCK END ADDRESS
A4
A3
A3
A4
A2
A5
A1
A6
A0
A7
Figure 48. SPI Write MSB_FIRST = 1
Figure 49. SPI Write MSB_FIRST = 0
WRITE
N0
0
Rev. A | Page 52 of 80
N6
N1
BLOCK COUNT (Nx)
N5
N2
BLOCK COUNT (Nx)
N4
N3
SPI Write
Data on the SDI pin is registered on the rising edge of SCLK.
During a write, the serial port accumulates eight input bits
of data before transferring one byte to the internal registers.
Figure 48 and Figure 49 show one byte block transfer for
writing in MSB_FIRST and LSB_FIRST modes.
N4
N3
N2
N5
N1
N6
WRITE
N0
0
D7
D0
D1
D6
D5
D2
D4
D3
D3
D4
D2
D5
D1
D6
D0
D7