mt90528ag2 Zarlink Semiconductor, mt90528ag2 Datasheet - Page 26

• Manufacturer Part Number: mt90528ag2
• Description: 28-port Primary Rate Circuit Emulation Aal1 Sar
• Manufacturer: Zarlink Semiconductor

Ball Pin #
C14
D14
A15
B15
B14
A14
B13
A13
C4M/C2M_b
TDM_CLK
PHY_CLK
SEC_REF
SEC_LOS
Pin Name
PRI_REF
PRI_LOS
F0_b
I/O
I/O
I/O
O
O
O
O
I
I
CMOS PD /
CMOS PD /
3.3 V, 2 mA
3.3 V, 2 mA
3.3 V, 2 mA
3.3 V, 2 mA
CMOS PD
CMOS PD
Table 5 - Clock Management Pins
24 mA
24 mA
3.3 V
3.3 V
3.3 V
3.3 V
Type
Zarlink Semiconductor Inc.
MT90528
Clock input from external PLL, operating at DS1/E1/ST-BUS line rate.
PRS-traceable clock input (8 kHz reference clock or 19.44 MHz clock
from PHY network layer).
- Backplane clock to be used when all 28 TDM ports are to have the
same input and output clock.
- TDM clock running at either 4.096 MHz or 2.048 MHz.
- Input in TDM backplane slave mode; output in TDM backplane mas-
ter mode.
- Frame pulse which delineates the 8 kHz frame boundary on PCM
input and output streams.
- In 2.048 Mbps ST-BUS applications, this is a negative-going pulse
straddling the frame boundary and lasting for one cycle of the 4.096
MHz clock.
- In Generic bus applications, this signal may be a positive-going or
negative-going pulse following the frame boundary and lasting for one
bit cycle (i.e., one cycle of the 2.048 MHz clock).
- Input in TDM backplane slave mode; output in TDM backplane mas-
ter mode.
Output clock running at DS1/E1/ST-BUS line rate, used to provide a
primary reference clock for an external PLL.
Note: This pin will still present a clock (derived from an internal PLL)
even if its source clock is experiencing an LOS condition. Therefore,
the PRI_LOS signal should be used to qualify the quality of this clock.
If high, indicates to an external PLL that the primary reference clock
has experienced an LOS condition.
Output clock running at DS1/E1/ST-BUS line rate, used to provide a
secondary reference clock for an external PLL.
If high, indicates to an external PLL that the secondary reference
clock has experienced an LOS condition.
26
Description
Data Sheet