参数资料
型号: DS3131
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: Telecom IC:Other
英文描述: SPECIALTY TELECOM CIRCUIT, PBGA256
封装: 27 X 27 MM, PLASTIC, BGA-256
文件页数: 105/174页
文件大小: 1261K
代理商: DS3131
DS3131
36 of 174
5. GENERAL DEVICE CONFIGURATION AND STATUS/INTERRUPT
5.1 Master Reset and ID Register Description
The master reset and ID (MRID) register can be used to globally reset the device. When the RST bit is
set to 1, all of the internal registers (except the PCI configuration registers) are placed into their default
state, which is 0000h. The host must set the RST bit back to 0 before the device can be programmed for
normal operation. The RST bit does not force the PCI outputs to three-state as does the hardware reset
which is invoked by the PRST pin. A reset invoked by the PRST pin forces the RST bit to 0 as well as
the rest of the internal configuration registers. See Section 2 for more details about device initialization.
The upper byte of the MRID register is read-only and it can be read by the host to determine the chip
revision. Contact the factory for specifics on the meaning of the value read from the ID0 to ID7 bits.
Register Name:
MRID
Register Description:
Master Reset and ID Register
Register Address:
0000h
Bit #
7
6
5
4
3
2
1
0
Name
reserved
RST
Default
0
Bit #
15
14
13
12
11
10
9
8
Name
ID7
ID6
ID5
ID4
ID3
ID2
ID1
ID0
Default
0
Note:
Bits that are underlined are read-only; all other bits are read-write.
Bit 0/Master Software Reset (RST)
0 = normal operation
1 = force all internal registers (except LBBMC) to their default value of 0000h
Bits 8 to 15/Chip Revision ID Bit 0 to 7 (ID0 to ID7). Read-only. Contact the factory for details on the meaning
of the ID bits.
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