PXB4219E Datasheet, PDF (260/290 Pages) Infineon Technologies AG – Interworking Element for 8 E1/T1 Lines

IWE8, V3.4
PXB 4219E, PXB 4220E, PXB 4221E
Electrical Characteristics
Table 45 Receive Timing (8-Bit Data Bus, 33 MHz, Multi-PHY) (cont’d)
No. Signal Name DIR Description
Limit Values
Min
Max
tT7 RXDAT[7:0], A<P Input setup to RXCLK
8
-
tT8 ^RXPTY,
RXSOC,
tT9 _RXCLAV
Input hold from RXCLK
1
-
Signal going low impedance 8
-
to RXCLK
tT10
Signal going high impedance 0
-
to RXCLK
tT11
Signal going low impedance 1
-
from RXCLK
tT12
Signal going high impedance 1
-
from RXCLK
1) _{The frequency should be equal or smaller than the coreclock CLOCK}
Unit
ns
ns
ns
ns
ns
ns
9.6.4 IMA Interface
At the IMA interface the IWE8 operates in cycles of 12 system clocks. ATBTC can
become active during cycle #3, the UNCHEC can become active during cycle #9. The
Port number is always active for 6 cycles.
CLOCK
1
ATBTC
2
UNCHEC
3
P N 0 ..2
Totii
Figure 66 Timing of the IMA Interface
Data Sheet
260
2003-01-20