GX3202 Datasheet, PDF (37/49 Pages) Semtech Corporation – Crosspoint Switch with Trace Equalization and Output De-emphasis

4.12.1.1 APPI External Timing for Normal Write
P_CS
P_R/W
P_ADD
[11:0]
t SR W_w
P_DAT
[15:0]
t _{SC S_w}
t _{H C S_w}
t _{CSH_w}
A[11:0]
t _{SA_w}
D[15:0]
t _{SD_w}
t _{HRW_w}
t _{HA_w}
t _{H D_w}
P_ADS
t _{PW_w}
Figure 4-6: External Timing for Normal Write Cycle
Table 4-13: APPI External Timing Specifications for Normal Write
Parameter
P_CS LOW before P_ADS positive edge
P_CS hold time after P_ADS positive edge
P_R/W low before P_CS negative edge
P_R/W hold time after P_ADS positive edge
P_ADD[11:0] setup before P_ADS positive edge
P_ADD[11:0] hold after P_ADS positive edge
P_DAT[15:0] setup before P_ADS positive edge
P_DAT[15:0] hold after P_ADS positive edge
P_ADS LOW pulse width
P_CS HIGH before next read/write cycle
Frequency for back-to-back single writes
Symbol
t_{SCS_w}
t_{HCS_w}
t_{SRW_w}
t_{HRW_w}
t_{SA_w}
t_{HA_w}
t_{SD_w}
t_{HD_w}
t_{PW_w}
t_{CSH_w}
—
Equiv.
Cycles
—
2
—
2
—
—
—
—
0.6
5
—
Min
10.0
14.8
1.5
14.8
10.0
5.0
5.0
5.0
4.4
37.0
—
Typ Max Units
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
16.17 MHz
GX3202 202 x 202 3.5Gb/s Crosspoint
Data Sheet
56077 - 1
October 2012
37 of 49
Proprietary & Confidential