Zarlink Le51HE001V User Manual - Jumpers and Board Op-
CHAPTER
3
Zarlink Semiconductor Inc.
2
JUMPERS AND BOARD OP-
TIONS
2.1
DEVICE SELECTION JUMPER BLOCK
The 44-pin TQFP package evaluation board supports both the Le58QL021 and Le58QL061
QLSLAC devices. The pin-outs of both devices are identical when the being run in the PCM mode.
Therefore, the shunt blocks can be left in their default position on JR1 (i.e., row A shorted to row B).
When in the GCI mode, seven signal names for the Le58QL061 device change, but not their pin
assignment.
2.2
JUMPER BLOCKS JM1 – JM4
These jumpers are used to select different series capacitor values, or to select a direct DC
connection to the VOUT connector from the QLSLAC device’s analog output pins. Two capacitor
values (100 nF and 1.0 µF) are provided on the board. The table below shows the jumper
connection options.
The default position of the shunt, when shipped from the factory, and the pin numbering of the
jumper is shown in Figure 2–1:
Figure 2–1 Jumper Blocks JM1 – JM4
2.3
JUMPER JM5
The QLSLAC device’s internal digital signal processor (DSP) operates from an internal master
clock. In the PCM/MPI mode, the master clock can be provided from the external MCLK input or the
device may internally derive the signal from the PCM (PCLK) clock input. In GCI mode the master
clock is derived from the DCL pin. If the internal clock is derived from PCLK, the MCLK/E1 pin can
be used as an E1 output to control
Zarlnk
SLIC devices having multiplexed switchhook and
ground-key detector outputs. Selection of the MCLK/E1 pin’s MCLK input or E1 output operation is
established by device programming. (Refer to
Zarlink
SLIC device data sheets and the QLSLAC
device data sheets for explanations and use of the E1 function.)
The JM5 jumper selects the board connection options to the QLSLAC device’s MCLK/E1 pin. When
this jumper is set for the E1 function, the MCLK/E1 pin of the QLSLAC device connects to the H1,
H2, H3, and H4 headers that supply the control input/output to an
Zarlnk
SLIC Device Evaluation
Board. When the jumper is set to the MCLK function, the MCLK/E1 pin connects to the MCLK signal
Table 2–1 JM1 – JM4 Jumper Connection Options
Output Pin
Jumper
Pin 1 to 6
Pin 2 to 5
Pin 3 to 4
VOUT1
JM1
DC
100 nF
1.0 µF
VOUT2
JM2
DC
100 nF
1.0 µF
VOUT3
JM3
DC
100 nF
1.0 µF
VOUT4
JM4
DC
100 nF
1.0 µF
1
2
3
4
5
6
Place shunt between pins 2 & 5 when
connecting to a Zarlink SLIC device.
Place shunt between pins 3 & 4 when
testing the board in a standalone mode.