參數(shù)資料
型號: T8105A
英文描述: H.100/H.110 Interface and Time-Slot Interchangers
中文描述: H.100/H.110接口和時隙Interchangers
文件頁數(shù): 56/112頁
文件大?。?/td> 1408K
代理商: T8105A
52
Lucent Technologies Inc.
Advance Data Sheet
November 1999
H.100/H.110 Interfaces and Time-Slot Interchangers
Ambassador T8100A, T8102, and T8105
2 Architecture and Functional Description
(continued)
2.5 Clocking Section
(continued)
2.5.8 Clock Control Register Definitions
(continued)
Table 49. CKR: Clocks, Resource Selection, 0x03
Clock register 0x03, CKR, is the clock resources register. It is used for selecting and programming miscellaneous
internal resources, the two PLLs, the DPLL, and the clock resource selector. It is also used to program the
SCLK/SCLKX2 clock outputs. The register format is as follows:
Reg
CKR
R/W
Bit 7
Bit 6
Bit 5
P1B
Bit 4
P1R
Bit 3
P2B
Bit 2
P2R
Bit 1
Bit 0
CRS
SCS
Symbol
CRS
Bit
7—6 The CRS[7:6] bits are used to select the input to PLL #1.
CRS = 00,
CRS = 01,
CRS = 10,
CRS = 11,
5
P1B and P1R control PLL #1.
P1B = 0,
P1B = 1,
4
P1R = 0,
P1R = 1,
3
P2B and P2R control PLL #2.
P2B = 0,
P2B = 1,
2
P2R = 0,
P2R = 1,
1—0 The SCS[1:0] bits are used to program the outgoing SC-Bus compatibility signals.
SCS = 00,
SC-Bus outputs 3-stated.
SCS = 01,
SCLK @ 2.048 MHz, SCLKX2 @ 4.096 MHz.
SCS = 10,
SCLK @ 4.096 MHz, SCLKX2 @ 8.192 MHz.
SCS = 11,
SCLK @ 8.192 MHz, SCLKX2 @ phase shifted 8.192 MHz.
Description
External input (through the 4MHzIN pin).
Resource divider.
DPLL @ 2.048 MHz.
DPLL @ 4.096 MHz.
P1B
Normal PLL #1 operation.
Bypass PLL #1.
PLL #1 rate multiplier = 16.
PLL #1 rate multiplier = 32.
P1R
P2B
Normal PLL #2 operation.
Bypass PLL #2.
PLL #2 rate multiplier = 8.
PLL #2 rate multiplier = 16.
P2R
SCS
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