Lattice Semiconductor HW-USBN-2B, Руководство пользователя

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Programming Cables
User Guide
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6 FPGA-UG-02042-26.2
3. Programming Cable Pin Definitions
The functions provided by the programming cables correspond with available functions on Lattice programmable
devices. Since some devices contain different programming features, the specific functions provided by the
programming cable may depend on the selected target device. ispVM System/Diamond Programmer software
automatically generates the appropriate functions based on the selected device. See
Table 3.1 for an overview of the
programming cable functions.
Table 3.1. Programming Cable Pin Definitions
Programming Cable Pin Name Programming Cable Pin Type Description
VCC Programming
Voltage Input Connect to V
CC
or V
CCJ
plane of the target device.
Typical ICC = 10 mA. Your board design supplies
the power for V
CC
. Note: This may not be the
same as a target device’s V
CCO
plane.
TDO/SO Test Data
Output Input Used to shift data out via the IEEE1149.1 (JTAG)
programming standard.
TDI/SI Test Data Input Output Used to shift data in via the IEEE1149.1
programming standard.
ispEN/PROG/SN Enable Output Enable device to be programmed.
SN = SSPI Chip select for HW-USBN-2B
TRST Test Reset Output Optional IEEE 1149.1 state machine reset.
DONE DONE Input DONE indicates status of configuration
TMS Test Mode
Select Input Output Used to control the IEEE1149.1 state machine.
GND Ground Input Connect to ground plane of the target device
TCK/SCLK Test Clock Input Output Used to clock the IEEE1149.1 state machine
INIT Initialize Input Indicates device is ready for configuration to
begin. INITN is only found on some devices.
I2C: SCL* I
2
C SCL Output Provides the I
2
C signal SCL
I2C: SDA* I 2 C SDA Output Provides the I 2 C signal SDA.
5 V Out* 5 V Out Output Provides a 5 V signal for the iCEprogM1050
Programmer.
*Note: Only found on the HW-USBN-2B cable.
TRST
GND
*
TMS
*
TDI/SI
*
TDO/SO
*
ISPEN/PROG/SN
VCC
*
5 V OUT
I 2 C: SCL
TCK/SCLK
*
I
2
C: SDA
DONE
* Indicates flywire connections required for most basic JTAG programming.
Figure 3.1. Programming Cable In-System Programming Interface for the PC (HW-USBN-2B)*
*Note:
Requires Diamond Programmer 3.1 or later
.