MAX16048 Maxim Integrated Products, MAX16048 Datasheet - Page 52

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

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12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
The MAX16046/MAX16048 contain a JTAG port that
complies with a subset of the IEEE 1149.1 specifica-
tion. Either the I
to access internal memory; however, only one interface
is allowed to run at a time. The MAX16046/MAX16048
Figure 13. JTAG Block Diagram
52
TMS
______________________________________________________________________________________
TCK
TDI
R
PU
V
DB
2
C or the JTAG interface may be used
JTAG Serial Interface
MEMORY ADDRESS REGISTER
MEMORY WRITE REGISTER
MEMORY READ REGISTER
IDENTIFICATION REGISTER
INSTRUCTION REGISTER
USER CODE REGISTER
TEST ACCESS PORT
[LENGTH = 5 BITS]
(TAP) CONTROLLER
[LENGTH = 8 BITS]
[LENGTH = 32 BITS]
[LENGTH = 32 BITS]
[LENGTH = 8 BITS]
[LENGTH = 8 BITS]
BYPASS REGISTER
[LENGTH = 1 BIT]
AND EEPROM
REGISTERS
do not support IEEE 1149.1 boundary-scan functionali-
ty. The MAX16046/MAX16048 contain extra JTAG
instructions and registers not included in the JTAG
specification that provide access to internal memory.
The extra instructions include LOAD ADDRESS, WRITE,
READ, REBOOT, SAVE, and USERCODE.
01100
01011
01010
01001
01000
00111
00110
00101
00100
00011
00000
11111
MUX 1
COMMAND
DECODER
MUX 2
01100
01011
01010
01001
01000
00111
RSTEEPADD
SETEEPADD
RSTEXTRAM
SETEXTRAM
SAVE
REBOOT
TDO