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MAX16068 Datasheet(PDF) 33 Page - Maxim Integrated Products

Part # MAX16068
Description  6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX16068 Datasheet(HTML) 33 Page - Maxim Integrated Products

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______________________________________________________________________________________ 33
6-Channel, Flash-Configurable System Manager
with Nonvolatile Fault Registers
Exit1-IR: A rising edge on TCK with TMS low puts the
controller in the pause-IR state. If TMS is high on the ris-
ing edge of TCK, the controller enters the update-IR state.
Pause-IR: Shifting of the instruction shift register halts
temporarily. With TMS high, a rising edge on TCK puts
the controller in the exit2-IR state. The controller remains
in the pause-IR state if TMS is low during a rising edge
on TCK.
Exit2-IR: A rising edge on TCK with TMS high puts the
controller in the update-IR state. The controller loops
back to shift-IR if TMS is low during a rising edge of TCK
in this state.
Update-IR: The instruction code that has been shifted
into the instruction shift register latches to the parallel
outputs of the instruction register on the falling edge of
TCK as the controller enters this state. Once latched,
this instruction becomes the current instruction. A rising
edge on TCK with TMS low puts the controller in the run-
test/idle state. With TMS high, the controller enters the
select-DR-scan state.
Instruction Register
The instruction register contains a shift register as well
as a latched 5-bit wide parallel output. When the TAP
controller enters the shift-IR state, the instruction shift
register connects between TDI and TDO. While in the
shift-IR state, a rising edge on TCK with TMS low shifts
the data one stage toward the serial output at TDO. A
rising edge on TCK in the exit1-IR state or the exit2-IR
state with TMS high moves the controller to the update-
IR state. The falling edge of that same TCK latches the
data in the instruction shift register to the instruction
register parallel output. Table 21 shows the instructions
supported by the MAX16068 and the respective opera-
tional binary codes.
BYPASS: When the BYPASS instruction is latched into
the instruction register, TDI connects to TDO through the
1-bit bypass test data register. This allows data to pass
from TDI to TDO without affecting the device’s operation.
IDCODE: When the IDCODE instruction is latched into
the parallel instruction register, the identification data
register is selected. The device identification code is
loaded into the identification data register on the rising
edge of TCK following entry into the capture-DR state.
Shift-DR can be used to shift the identification code
out serially through TDO. During test-logic-reset, the
IDCODE instruction is forced into the instruction register.
The identification code always has a ‘1’ in the LSB posi-
tion. The next 11 bits identify the manufacturer’s JEDEC
number and number of continuation bytes followed by
16 bits for the device and 4 bits for the version. See
Table 22.
Table 21. JTAG Instruction Set
Table 22. 32-Bit Identification Code
INSTRUCTION
CODE
NOTES
BYPASS
0x1F
Mandatory instruction code
IDCODE
0x00
Load manufacturer ID code/part number
USERCODE
0x03
Load user code
LOAD ADDRESS
0x04
Load address register content
READ DATA
0x05
Read data pointed by current address
WRITE DATA
0x06
Write data pointed by current address
REBOOT
0x07
Reboot FLASH data content into register file
SAVE
0x08
Trigger emergency save to flash
SETFLSHADD
0x09
Flash page access ON
RSTFLSHADD
0x0A
Flash page access OFF
SETUSRFLSH
0x0B
User flash access ON (must be in flash page already)
RSTUSRFLSH
0x0C
User flash access OFF (return to flash page)
MSB
LSB
VERSION (4 BITS)
PART NUMBER (16 BITS)
MANUFACTURER (11 BITS)
FIXED VALUE (1 BIT)
0001
1000000000000010
00011001011
1


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