ATR2434-PLT 查看數據表（PDF） - Atmel Corporation
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ATR2434-PLT Datasheet PDF : 35 Pages
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ATR2434 [Preliminary]
Table 3. Revision ID Register
Addr: 0x00
7
6
5
Silicon ID
REG_ID
4
3
Default: 0x07
2
1
0
Product ID
Bit Name
7:4 Silicon ID
3:0 Product ID
Description
These are the Silicon ID revision bits. 0000 = Rev A, 0001 = Rev B, etc. These bits are read-only.
These are the Product ID revision bits. Fixed at value 0111. These bits are read-only.
Table 4. Synthesizer A Counter
Addr: 0x01
7
6
5
Reserved
REG_SYN_A_CNT
4
3
2
Count
Default: 0x00
1
0
Bit Name
Description
7:5 Reserved These bits are reserved and should be written with zeros.
4:0 Count
The Synthesizer A Counter register is used for diagnostic purposes and is not recommended for normal
operation. The Channel register is the recommended method of setting the Synthesizer frequency.
The Synthesizer A Count along with the Synthesizer N Count can be used to generate the Synthesizer frequency.
The range of valid values of the Synthesizer A Count is 0 through 31. Using the Synthesizer A and N Count
register is an alternative to using the Channel register. Selection between the use of the Channel register or the A
and N registers is done through the Channel register (Reg 0x21, bit 7). When in Channel mode the A and N Count
bits can be used to read the A and N values derived directly from the Channel.
Table 5. Synthesizer N Counter
Addr: 0x02
7
6
5
Reserved
REG_SYN_N_CNT
4
3
2
Count
Default: 0x00
1
0
Bit Name
Description
7 Reserved This bit is reserved and should be written with zero.
6:0 Count
The Synthesizer N Counter register is used for diagnostic purposes and therefore is not recommended for normal
operation. The Channel register is the recommended method of setting the Synthesizer frequency.
The Synthesizer N Count along with the Synthesizer A Count can be used to generate the Synthesizer frequency.
The range of valid values of the Synthesizer N Count is 74 through 76. Using the Synthesizer A and N Count
register is an alternative to using the Channel register. Selection between the use of the Channel register or the A
and N registers is done through the Channel register (Reg 0x21, bit 7). When in Channel mode the A and N
Count bits can be used to read the A and N values derived directly from the Channel.
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4822C–ISM–09/04
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