FS6159-01 데이터 시트보기 (PDF) - AMI Semiconductor
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FS6159-01 Datasheet PDF : 15 Pages
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FS6159-01
Auxiliary Motherboard Clock Generator/Buffer IC
2.0 Programming Information
Table 4: Clock Enable Configuration
CONTROL INPUTS (1)
CLOCK OUTPUTS (MHz)
PWR_DWN#
SEL_Q
SEL_R SEL_S
CK48_0
CK48_1 CK66_0:4 CK66_5 REF_0:1 PCI_0:5
1
0
0
0
48.008
48.008
66.67
66.67
14.318
33.33
1
0
0
1
48.008
48.008
66.67
66.67
14.318
stopped
low
1
0
1
0
48.008
48.008
66.67
66.67
14.318
stopped
low
1
0
1
1
48.008
48.008
66.67
66.67
14.318
stopped
low
1
1
0
0
tristate
tristate
tristate tristate tristate tristate
1
1
0
1
48.008
48.008
66.67
stopped
low
14.318
33.33
1
1
1
0
48.008
48.008
66.67
66.67
stopped
low
33.33
1
1
1
1
48.008
stopped
low
66.67
66.67
14.318
33.33
0
X
X
X
stopped
low
stopped
low
stopped
low
1. Control inputs override any SMBus register settings in situations where the outputs are stopped low
stopped stopped
low
low
stopped
low
PCI_6:7
33.33
stopped
low
33.33
stopped
low
tristate
33.33
33.33
33.33
stopped
low
PCI_8:11
33.33
33.33
33.33
stopped
low
tristate
33.33
33.33
33.33
stopped
low
Table 5: Synthesis Offset
CLOCK
TARGET
(MHz)
ACTUAL
(MHz)
DEVIATION
(ppm)
CK48 (1)
48.00
48.0080
+167
1. 48MHz USB clock is required to be 167ppm off from 48.000MHz to conform to USB
requirements.
3.0 Programming Interface
This device supports the SMBus Block Write and Block
Read commands. The device address is as follows:
Table 6: Device Address
A6
A5
A4
A3
A2
A1
A0
1
1
0
1
0
0
1
3.1 Block Write
The Block Write command allows the bus host to write
several bytes of data to sequential registers, starting with
the Byte 0 Register. As shown in Figure 2, a Block Write
starts with the seven-bit device address followed by a
logic-low R/W bit. After an acknowledge of the device
address and R/W bit by this device, a command code is
containing all zeroes (0000 0000) is written.
After the zero command code and an acknowledge, the
bus host then issues a byte count that describes the
number of data bytes to be written. The byte count must
be a minimum of one byte and a maximum of 32 bytes.
ISO9001
2.27.02
3
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