User guide
CY3687 MoBL-USB FX2LP18 Development Kit User Guide, Doc. # 001-68582 Rev. *B 21
Development Board
3.5 Interface Connectors
Six 20-pin headers P1-P6 on the MoBL-USB FX2LP18 Development Board have pins assigned to
be compatible with HP (Agilent) logic analyzers, as shown in Table 3-3. The slight bulge in the mid-
dle rows of the table (pins 9 and 11) indicates the connector key. The six headers P1-P6 serve three
purposes:
■ They mate with the prototyping board supplied in the MoBL-USB Development Kit or the one
supplied in the CY3687 MoBL-USB FX2LP18 Development Kit.
■ They allow direct connection of HP (Agilent) logic analyzer pods (Agilent P/N 01650- 63203).
■ They allow general purpose probing by other logic analyzers or oscilloscopes.
Table 3-3 shows the logic analyzer pod pin designations. The MoBL-USB signals on P1-P6 are
arranged to fulfill the following requirements:
■ High-speed MoBL-USB strobe signals (CLKOUT and IFCLK) are connected to pin 3 of each of
the five connectors P1-P6, so that they may be used as the logic analyzer clock CLK1.
■ CLK2 is not used. Instead, each connector brings 3.3 V power from the MoBL-USB Development
Board up to the prototype board using pin 2.
■ The signals are logically grouped. For example, the MoBL-USB FIFO data (which shares PORTB
and PORTD pins) is on P1.
Because the 20-pin headers on the prototyping board are stackable, it is possible to build custom cir-
cuitry on the proto board, plug the board into the MoBL-USB development board, and still plug logic
analyzer pods into the six connectors P1-P6.
Table 3-4 through Table 3-9 show the MoBL-USB pin designations for P1 through P6. For dual-mode
pins, the power-on default signal names are shown in bold type, and the alternate pin names are
shown in the outside columns.
Table 3-3. Logic Analyzer Pinout
Agilent 01650-63203 Pod Pins
CLK1
34 D15
D14 5 6 D13
D12 7 8 D11
D10 9 10 D9
D8 11 12 D7
D6 13 14 D5
D4 15 16 D3
D2 17 18 D1
D0 19 20 GND
Table 3-4. P1 Pin Designations
Alternate Default P1 Default Alternate
NC 1 2 3.3 V
VCCIO 3 4 PD7 FD[15]
FD[14] PD6 5 6 PD5 FD[13]
FD[12] PD4 7 8 PD3 FD[11]
FD[10] PD2 9 10 PD1 FD[9]
FD[8] PD0 11 12 PB7 FD[7]