zl50110gag2 Zarlink Semiconductor, zl50110gag2 Datasheet - Page 105

• Manufacturer Part Number: zl50110gag2
• Description: 1024 Channel 32 T1/e1, 2 T3/e3 Cesop Processor With Triple Ethernet Interface
• Manufacturer: Zarlink Semiconductor

The function of the circuit is to extend the TA signal, to ensure the CPU correctly registers it. Resistor R2 must be
fitted to ensure correct operation of the TA input to the processor. It is recommended that the logic is fitted close to
the ZL50110/11/12/14 and that the clock to the 74LCX74 is derived from the same clock source as that input to the
ZL50110/11/12/14.
13.3
The ZL50111/2 and ZL50110/4 have different Mx_LINKUP_LED pin assignments as shown in Table 46.
Mx_LINKUP_LED Outputs
CPU_CLK
to ZL50110/11/12/14
CPU_TA
from ZL50110/11/12/14
M0_LINKUP_LED
M1_LINKUP_LED
M2_LINKUP_LED
M3_LINKUP_LED
Signal
Table 45 - Mx_LINKUP_LED Pin Assignments
+3V3
Figure 50 - CPU_TA Board Circuit
4K7
R1
ZL50110/11/12/14
D
Zarlink Semiconductor Inc.
Q
ZL50111/2 Pin
AB23
105
G23
G24
F26
CPU_CS
to ZL50110/11/14
ZL50110/4 Pin
+
G24
G23
NC
NC
3V3
R2
4K7
CPU_TA
to CPU
Data Sheet