MSP 3400C
PRELIMINARY DATA SHEET
7.3.3. DC Level Register
7.3.6. MSP Product Code
DC level readout FM1
DC level readout FM2
DC Level
001b
001c
H+L
H+L
Product
001f
H
hex
hex
MSP 3400C
MSP 3400
MSP 3410
0000 0000
0000 1010
0000 1010
00
hex
hex
1)
[0
hex
... 7FFF
]
0A
0A
hex
hex
hex
values are 16 bit binary
The DC level register measures the DC component of
the incoming FM signals (FM1 and FM2). This can be
used for seek functions in satellite receivers and for IF
FM frequencies fine tuning. For further processing, the
DC content of the demodulated FM signals is sup-
pressed. The time constantτ, defining the transition time
of the DC Level Register, is approximately 28 ms.
1)
Note: The MSP 3400 hardware is identical to the
MSP 3410. Therefore, the family code readout will show
‘MSP 3410’ instead of its label ‘MSP 3400’.
7.3.7. MSP ROM Version Code
ROM Version
001f
L
hex
7.3.4. MSP Hardware Version Code
Major software revision
MSP 3400C – B5
MSP 3400C – C6
MSP 3400C – C8
[00
... FF
]
hex
hex
Hardware Version
Hardware Version
MSP 3400C – C8
001e
H
hex
0000 0101
0000 0110
0000 1000
05
06
08
hex
hex
hex
[00
... FF
]
hex
hex
03
hex
A change in the hardware version code defines hard-
ware optimizations that may have influence on the chip’s
behavior. The readout of this register is identical to the
hardware version code in the chip’s imprint.
A change in the ROM version code defines internal soft-
ware optimizations, that may have influence on the
chip’s behavior, e.g. new features may have been in-
cluded. Whileasoftwarechangeisintendedtocreateno
compatibility problems, customers that want to use the
new functions can identify new MSP 3400C versions ac-
cording to this number. The readout of this register is
identical to the ROM version code in the chip’s imprint.
7.3.5. MSP Major Revision Code
Major Revision
001e
L
hex
MSP 3400C
03
hex
TheMSP3400CisthethirdgenerationofICsintheMSP
family.
42
MICRONAS INTERMETALL
MICRONAS [ MICRONAS ]
