Datasheet

Data Sheet AD9559
Rev. C | Page 11 of 120
SERIAL PORT SPECIFICATIONS—SPI MODE
Table 14.
Parameter Min Typ Max Unit Test Conditions/Comments
M5/
CS
M5/
CS
is a dual function pin; the values in
this table apply when this pin is used as a
serial port pin, that is,
CS
; see Table 16 for
the specifications when this pin is used as
a multifunction pin (M5)
Input Logic 1 Voltage 2.2 V
Input Logic 0 Voltage
0.8
V
Input Logic 1 Current 20 µA
Input Logic 0 Current 50 µA
Input Capacitance 2 pF
SCLK Internal 10 kΩ pull-down resistor
Input Logic 1 Voltage 2.2 V
Input Logic 0 Voltage 0.8 V
Input Logic 1 Current 200 µA
Input Logic 0 Current 1 µA
Input Capacitance 2 pF
SDIO
As an Input
Input Logic 1 Voltage 2.2 V
Input Logic 0 Voltage 0.8 V
Input Logic 1 Current 1 µA
Input Logic 0 Current 1 µA
Input Capacitance 2 pF
As an Output
Output Logic 1 Voltage VDD3 − 0.6 V 1 mA load current
Output Logic 0 Voltage 0.4 V 1 mA load current
M4/SDO M4/SDO is a dual function pin; the values in
this table apply when this pin is used as
a serial port pin, that is SDO; see Table 16
for the specifications when this pin is used
as a multifunction pin (M4)
Output Logic 1 Voltage VDD3 − 0.6 V 1 mA load current
Output Logic 0 Voltage 0.4 V 1 mA load current
TIMING See Figure 47 and Figure 50
SCLK
Clock Rate, 1/t
CLK
40 MHz
Pulse Width High, t
HIGH
10 ns
Pulse Width Low, t
LOW
13 ns
SDIO to SCLK Setup, t
DS
3 ns
SCLK to SDIO Hold, t
DH
6
ns
SCLK to Valid SDIO and SDO, t
DV
10 ns
CS
to SCLK Setup (t
S
) 10 ns
CS
to SCLK Hold (t
C
) 0 ns
CS
Minimum Pulse Width High 6 ns