Zarlink Le51HE001V User Manual - page 9
Le51HE001V
Eval Board User Guide
5
Zarlink Semiconductor Inc.
2.6
TEST POINTS
Several test points are provided to facilitate signal checking when probing around the chip. The test
points and their descriptions are contained in the table below.
The first 12 (/RST-PCLK) are next to the IFB0 connector. VREF is to the right of the QLSLAC device
socket. VIN1 - VIN4 and VOUT1 - VOUT4 test points are located to the right of the QLSLAC device
socket between the control headers, H1 - H4 and the BNC connectors. Nine GND test points are
placed around the board (refer to Figure 1–1 on page 1-2).
2.7
BREADBOARD AREA
A breadboard area is provided on the board. This area may be used for adding any circuit
representative of the environment where the QLSLAC device may be used, and allows device
evaluation along with any such added circuit. The bread board area is located on the right hand
side of the board next to the BNC connectors. GND and VCC signals are provided to this area.
Each VIN and VOUT BNC has a trace connecting it to the adjacent row of pins in the breadboard
area. An example of this is shown in Figure 2–3 below.
Figure 2–3 VIN/VOUT BNC Trace
Table 2–4 PCM Test Points
PCM Test Point
Description
/RST
Reset input to the device. A logic Low will reset the QLSLAC device.
MCLK
Master clock input by use for the digital signal processor.
DCLK
The data clock input shifts data into and out of the microprocessor interface.
DRB
The PCM Data Receive B port.
DIO
Control data is serially written into or read from the QLSLAC device.
/INT
The interrupt output pin. Active Low.
DXA
The PCM Data Transmit A port.
/CS
Chip Select (Active Low) enables the device for control data to/from the part.
DRA
The PCM Data Receive A port.
DXB
The PCM Data Transmit B port.
FS
The Frame Sync input is an 8 kHz signal indetifying Time Slot/Clock Slot 0.
PCLK
The PCM clock determines the rate at which PCM data is shifted.
VREF
Analog Reference voltage output pin.
VIN1-VIN4,
VOUT1-VOUT4
Audio from the SLIC device.
Audio to the SLIC device.
GND
There are 9 GND test points on the board.
VOUT4
VCC
GND
To JM4
VCC for the breadboard area is supplied by AUX_VCC.
The GND connection is the common GND for the board