D E T A I L E D A R C H I T E C T U R E
Data Device Corporation
SB-3642 Manual
Rev D – 4/19
21
4.4 Card Pinouts
This section delineates the pinouts for the card. The front-panel configuration allows
all signals to pass through a 68-pin I/O connector. Note that PCI signal inputs are via
Pn1 & Pn2 ports on the PMC connector.
The front panel connector described here contains each channel’s Interface Signals,
Reference Inputs, Velocity Output, BIT Output, Encoder Emulation Outputs, and
Programmable Digital I/O signals.
Table 7. Signal List
SIGNAL NAME
Direction
Description
CHx_RH
Input
Channel Reference High
CHx_RL
Input
Channel Reference Low
CHx_S1
Input
Channel S1 Signal
CHx_S2
Input
Channel S2 Signal
CHx_S3
Input
Channel S3 Signal
CHx_S4
Input
Channel S4 Signal
CHx_AGND
Ground Channel Analog Ground
CHx_BIT_L
Output
Channel Built-In-Test Signal
CHx_VEL
Output
Channel Velocity Signal
CHx_A
Output
Channel Encoder Emulation Signal A
CHx_U/B
Output
Channel Encoder Emulation Signal B
CHx_CB/Zi
Output
Channel Encoder Emulation Signal Zi
DGND
Ground Digital ground reference connection
DIO_Input_x
Input
Discrete Input
DIO_Output_x
Output
Discrete Output
DIO_Ext_GND
Ground Discrete ground reference connection
EXT_FLASH_WRITE_EN_L
Flashing
For new firmware flashes only. No Connect during
normal use
BOOT_SELECT
Flashing
For new firmware flashes only. No Connect during
normal use
Note: Within each Signal Name, “x” designates a particular value from 0 to 7.
