18
ispMACH 4000ZE Pico Development Kit
Lattice Semiconductor
User’s Guide
ispMACH4256ZE-MN144 CPLD
The ispMACH4256ZE-MN144 is a 144-ball csBGA package CPLD device which provides 108 I/Os and 4 dedicated
inputs in a 7 x 7mm package.
Table 9. LC4256ZE CPLD Interface Reference
Item
Description
Reference Designators
U1
Part Number
LC4256ZE
Manufacturer
Lattice Semiconductor
Web Site
www.latticesemi.com
JTAG Interface Circuits
For power and programming an FTDI USB UART/FIFO IC converter provides a communication interface between a
PC host and the JTAG programming chain of the Pico board. The USB 5V supply is also used as a source for the
3.3V and 1.8V supply rails. A USB B-type mini socket is provided for the USB connector cable.
Table 10. JTAG Interface Reference
Item
Description
Reference Designators
U4
Part Number
FT2232D
Manufacturer
FTDI (Future)
Web Site
www.ftdichip.com
7
4K_TCK
TCK
8
USB_TCK
N/A
9
4K_TMS
TMS
10
USB_TMS
N/A
11
PROTO_K7
K7
12
USB_SDA
N/A
13
PROTO_M7
M7
14
USB_SCL
n/a
15
PROTO_K4
K4
16
PROTO_L7
L7
17
PROTO_M3
M3
18
PROTO_L8
L8
19
PROTO_L4
L4
20
PROTO_M8
M8
21
PROTO_M4
M4
22
PROTO_M9
M9
23
PROTO_K3
K3
24
PROTO_L9
L9
25
CLK0_MACH
CLK0
26
PROTO_K8
K8
27
VMON_3
N/A
28
VMON_4
N/A
29
GND
N/A
30
GND
N/A