XRT72L52 Datasheet, PDF (44/480 Pages) Exar Corporation – TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L52
TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. P1.1.3
áç
PRELIMINARY
AC ELECTRICAL CHARACTERISTICS
Test Conditions: TA = 25°C, VDD = 3.3V + 5% unless otherwise specified
SYMBOL
PARAMETER
MIN. TYP.
MAX.
t₁₀ TxInClk to TxFrame output delay
13
Transmit Payload Data Input Interface - Looped-Timed/Nibble Mode (See Figure 5)
t_13A Max Delay of Rising Edge of TxNibClk to Data Valid
on TxNib[3:0]
DS3
20
E3
27
Transmit Payload Data Input Interface - Looped-Timed/Nibble Mode (See Figure 5)
t₁₃ TxNibClk to TxNibFrame output delay
25
31
Transmit Payload Data Input Interface - Local-Timed/Nibble Mode (See Figure 6)
t₁₄ Max Input Delay from TxNicClk to TxNib
20
27
t₁₅ Payload Nibble hold time, from latching edge of
0
TxNibClk
t₁₆ TxFrameRef set-up time, to latching edge of TxInClk
20
27
t₁₇ TxFrameRef hold time, from latching edge of TxNib- 0
Clk
t₁₈ TxNibClk to TxNibFrame output delay time
20
25
31
UNITS
ns
CONDITIONS
ns DS3 Applications
ns E3 Applications
ns DS3 Applications
ns E3 Applications
ns DS3 Applications
ns E3 Applications
ns
ns DS3 Applications
ns E3 Applications
Framer IC is
Frame Slave
ns
Frame IC is
Frame Slave
ns DS3 Applications
ns E3 Applications
25