MT90500 Datasheet, PDF (132/159 Pages) Mitel Networks Corporation – Multi-Channel ATM AAL1 SAR

MT90500
Table 93 - Primary UTOPIA Interface Parameters - Receive
Characteristic
Sym
Min
Typ
Max
Units
Test Conditions
PRXCLK Period
t_PRXP
40
ns PRXCLK = 25 MHz
PRXCLK Pulse Width (HIGH / LOW) t_PRXH/L
16
20
24
ns
Input Setup Time - (PRXCLAV, t_PRXIS
10
ns
PRXEN, PRXSOC asserted and
PRXDATA[7:0] VALID) to PRXCLK
rising
Input Hold Time - PRXCLK rising to t_PRXIH
1
ns
(PRXDATA[7:0] INVALID and
PRXSOC, PRXCLAV, and PRXEN de-
asserted)
Note 1: The MT90500 operates with the UTOPIA cell-level handshake.
Note 2: The relative timing of PRXCLAV, PRXEN and PRSOC must be as shown, or as given in UTOPIA Level 1 Version 2.01 Figure 6. The
timing shown is also valid for applications where PRXEN is permanently asserted.
PRXCLK
t_PRXP
PRXCLAV
PRXEN
t_PRXIS
PRXSOC
PRXDATA[7:0] X
X
H1
H2
t_PRXLt_PRXH
t_PRXIH
V_TT
V_TT
V_TT
t_PRXIH
V_TT
t_PRXIH
P47 X P48 H1
V_TT
Figure 58 - Primary UTOPIA Bus - Receive Timing
132