MAX16048 Maxim Integrated Products, MAX16048 Datasheet - Page 55

• Manufacturer Part Number: MAX16048
• Description: (MAX16046 / MAX16048) 12-Channel/8-Channel EEPROM-Programmable System Managers
• Manufacturer: Maxim Integrated Products

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Table 33. JTAG Instruction Set
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
normal 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
Table 34. 32-Bit Identification Code
USERCODE: When the USERCODE instruction latches
into the parallel instruction register, the user-code data
register is selected. The device user-code loads into
the user-code data register on the rising edge of TCK
following entry into the capture-DR state. Shift-DR can
Table 35. 32-Bit User-Code Data
MSB
MSB
System Managers with Nonvolatile Fault Registers
Version (4 bits)
LOAD ADDRESS
INSTRUCTION
WRITE DATA
SETEXTRAM
RSTEXTRAM
SETEEPADD
RSTEEPADD
READ DATA
USERCODE
REBOOT
IDCODE
BYPASS
0000
00000000000000000
SAVE
12-Channel/8-Channel EEPROM-Programmable
D.C. (don’t cares)
______________________________________________________________________________________
HEX CODE
0000000000000001
Device ID (16 bits)
0Ah
0Bh
0Ch
1Fh
00h
03h
04h
05h
06h
07h
08h
09h
Bypass. Mandatory instruction code.
Manufacturer ID code and part number
User code (user-defined ID)
Load address register content
Memory read
Memory write
Resets the device
Stores current fault information in EEPROM
Extended page access on
Extended page access off
EEPROM page access on
EEPROM page access off
slave address
See Table 31
I
2
C/SMBus
Manufacturer ID (11 bits)
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 regis-
ter. The identification code always has a ‘1’ in the LSB
position. The next 11 bits identify the manufacturer’s
JEDEC number and number of continuation bytes fol-
lowed by 16 bits for the device and 4 bits for the ver-
sion. See Table 34.
be used to shift the user-code out serially through TDO.
See Table 35. This instruction may be used to help
identify multiple MAX16046/MAX16048 devices con-
nected in a JTAG chain.
00011001011
SELECTED REGISTER/ACTION
User identification (firmware version)
r5Ch[7:0] contents
Fixed value (1 bit)
1
LSB
LSB
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