NXP Semiconductors TWR-S08, Руководство пользователя, Страница: 15 / 19

T W R - S 0 8 L L / L H U S E R G U I D E A P R I L 2 7 , 2 0 1 0
U S E R G U I D E
15
Differential ADC Input
The TWR-S08LH64 board provides a differential ADC input to the MC9S08LH64. Option
header JP10 allows the user to route the output and feedback from the Light Sensor (RZ1) to
the MC9S08LH64 differential ADC input. To use this feature correctly, the user should remove
the RZ1 jumper at JP7.
This option header is not populated on the TWR-S08LL version of this board. Figure 13 below
shows the USER2 enable position and associated signal for each user LED.
Figure 13: Option Header, JP10
 
Connects RZ1 output to MCU (default)
 
 
Connects edge connector to MCU
(*)
– Default Position
NOTE:
Differential input signals ADP0 & ADP0_J1 (refer to schematic) are shorted
on Rev B boards.
EDGE CONNECTOR PIN-OUT
The TWR-S08 board connects to the Freescale Tower System using the 2 PCIe Edge
Connectors. Note that according to the PCIe specification, the Bx signals are located on the
top of the board and the Ax signals are located on bottom. Pin B1 for the primary and
secondary connectors are at opposite ends of the board. The figures below show the pin-out
of each edge connector.
The primary connector is located on the side opposite the LCD. Edge connector positions with
no signal name are not connected.
Figure 14: Primary Edge Connector, J1
5.0V Power Pri_B01 Pri_A01 5.0V Power
Ground Pri_B02 Pri_A02 Ground
3.3V Power
Pri_B03 Pri_A03
3.3V Power
Elevator Power Sense Pri_B04 Pri_A04
3.3V Power
Ground Pri_B05 Pri_A05 Ground
Ground Pri_B06 Pri_A06 Ground
PTB6/RxD2/SPSCK Pri_B07 Pri_A07 PTB5/MOSI/SCL
Pri_B08 Pri_A08 PTB4/MISO/SDA
PTB7/TXD2/SS Pri_B09 Pri_A09
PTB5/MOSI/SCL Pri_B10 Pri_A10
PTB4/MISO/SDA Pri_B11 Pri_A11
RZ1
J1