ispPAC-CLK55xx Lattice Semiconductor, ispPAC-CLK55xx Datasheet - Page 34

• Manufacturer Part Number: ispPAC-CLK55xx
• Description: In-System Programmable Clock Generator with Universal Fan-Out Buffer
• Manufacturer: Lattice Semiconductor

Lattice Semiconductor
type and version code (Figure 30). Access to the Identification Register is immediately available, via a TAP data
scan operation, after power-up of the device, or by issuing a Test-Logic-Reset instruction. The bit code for this
instruction is defined by Lattice as shown in Table 8.
Figure 30. ispClock5500 Family ID Codes
In addition to the four instructions described above, there are 20 unique instructions specified by Lattice for the
ispClock5520. These instructions are primarily used to interface to the various user registers and the E
volatile memory. Additional instructions are used to control or monitor other features of the device, including bound-
ary scan operations. A brief description of each unique instruction is provided in detail below, and the bit codes are
found in Table 8.
PROGRAM_ENABLE – This instruction enables the ispClock5500’s programming mode.
PROGRAM_DISABLE – This instruction disables the ispClock5500’s programming mode.
BULK_ERASE – This instruction will erase all E
tronic security fuse (ESF). A bulk erase instruction must be issued before reprogramming a device. The device
must already be in programming mode for this instruction to execute.
ADDRESS_SHIFT – This instruction shifts address data into the address register (10 bits) in preparation for either
a PROGRAM or VERIFY instruction.
DATA_SHIFT – This instruction shifts data into or out of the data register (90 bits), and is used with both the PRO-
GRAM and VERIFY instructions.
PROGRAM – This instruction programs the contents of the data register to the E
to by the address register. The device must already be in programming mode for this instruction to execute.
PROG_INCR – This instruction first programs the contents of the data register into E
pointed to by the address register and then auto-increments the value of the address register. The device must
already be in programming mode for this instruction to execute.
PROGRAM_SECURITY – This instruction programs the electronic security fuse (ESF). This prevents data other
than the ID code and UES strings from being read fro the device. The electronic security fuse may only be reset by
issuing a BULK_ERASE command. The device must already be in programming mode for this instruction to exe-
cute.
E
E
2
2
Configured
Configured
Version
Version
(4 bits)
(4 bits)
0152h = ispClock5510
0150h = ispClock5520
MSB
MSB
(3.3V version)
(3.3V version)
Part Number
Part Number
XXXX / 0000 0001 0101 0010 / 0000 0100 001 / 1
XXXX / 0000 0001 0101 0000 / 0000 0100 001 / 1
(16 bits)
(16 bits)
2
CMOS bits in the device, including those the UES data and elec-
34
Lattice Semiconductor
Lattice Semiconductor
JEDEC Manufacturer
JEDEC Manufacturer
Identity Code for
Identity Code for
(11 bits)
(11 bits)
ispClock5500 Family Data Sheet
LSB
LSB
per 1149.1-1990
per 1149.1-1990
Constant ‘1’
Constant ‘1’
2
CMOS memory column pointed
(1 bit)
(1 bit)
2
CMOS memory column
2
CMOS non-