Digital interface specifications, Cs8422 digital interface specifications – Cirrus Logic CS8422 User Manual
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DS692F2
CS8422
DIGITAL INTERFACE SPECIFICATIONS
AGND = DGND = 0 V; all voltages with respect to 0 V.
Notes:
5.
When a digital signal is sent to the AES RX pins, the pins will draw approximately 730 µA from the digital
signal’s supply from the time RST is released until the RX_MODE, RX_SEL, and INPUT_TYPE bits in
register 03h are properly configured to allow a digital input signal on the driven pins, see
.
6.
Maximum sensitivity in accordance with AES3-2003 section 8.3.3. Measured with eye diagram height
at the specified voltage and width of at least 50% of one-half the biphase symbol period.
Parameter
Symbol
Min
Typ
Max
Units
Input Leakage Current
I
in
-
-
+32
A
Input Capacitance
I
in
-
8
-
pF
Digital Interface Receiver - RXP[1:0], RXN[1:0], RX[3:0]
Differential Input Sensitivity, RXP to RXN
-
-
200
mVpp
Differential Input Impedance, RXP and RXN to GND
-
11
-
k
Single-Ended Input Sensitivity, RX pins, Receiver Input Mode 1
-
-
200
mVpp
Single-Ended Input Impedance, RX pins, Receiver Input Mode 1
-
11
-
k
High-Level Input Voltage, RX pins in Digital mode
V
IH
0.55xVA
-
VA+0.3
V
Low-Level Input Voltage, RX pins in Digital mode
V
IL
-0.3
-
0.8
V
Digital I/O
High-Level Output Voltage (I
OH
= -4 mA)
V
OH
.77xVL
-
-
V
Low-Level Output Voltage (I
OL
= 4 mA)
V
OL
-
-
0.6
V
High-Level Input Voltage
V
IH
0.65xVL
-
-
V
Low-Level Input Voltage
V
IL
-
-
0.3xVL
V
Input Hysteresis
-
0.2
-
V