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CDC5806PWR データシート(PDF) 3 Page - Texas Instruments

部品番号 CDC5806PWR
部品情報  THREE PLLs BASED CLOCK GENERATOR
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ホームページ  http://www.ti.com
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FUNCTIONAL DESCRIPTION OF THE LOGIC
CDC5806
SCAS760A – MARCH 2004 – REVISED JULY 2004
Terminal Functions
TERMINAL
TYPE
DESCRIPTION
NAME
NO
REF_IN
2
I LVCMOS
Reference frequency input
VIDSEL
1
I LVCMOS
VIDSEL select input for VIDCLK. It selects between 74.175824 MHz from PLL1 and buffered
input frequency of 54 MHz, 100k||100k pull to mid-level.
AUDSEL
9
I LVCMOS
AUDSEL select input for AUDCLK. It selects between 16.9344 MHz and 12.288 MHz from
PLL2, 100k||100k pull to mid level.
MCSEL
10
I LVCMOS
MCSEL select input for MCCLK. It selects from 38.4 MHz, 19.2 MHz, and 12 MHz from PLL3,
100k||100k pull to mid level.
VIDCLK
4
O LVCMOS
VIDCLK output 74.175824 MHz or 54 MHz
AUDCLK
7
O LVCMOS
AUDCLK output 16.9344 MHz or 12.288 MHz
CPUCLK
17
O LVCMOS
CPUCLK output 64 MHz
ASICCLK
20
O LVCMOS
ASICCLK output 32 MHz
USBCLK
14
O LVCMOS
USBCLK output 48 MHz
MCCLK
4
O LVCMOS
MCCLK output 38.4 MHz / 19.2 MHz / 12 MHz
VDD_PLL1
3
Power
3.3-V supply for PLL1 and VIDCLK
VDD_PLL2
6
Power
3.3-V supply for PLL2 and AUDCLK
VDD_PLL3
13, 16, 19
Power
3.3-V supply for PLL3 and CPUCLK, ASICCLK, USBCLK, and MCCLK
VSS_PLL1
5
Ground
Ground for PLL1 and VIDCLK
VSS_PLL2
8
Ground
Ground for PLL2 and AUDCLK
VSS_PLL3
12, 15, 18
Ground
Ground for PLL3 and CPUCLK, ASICCLK, USBCLK, and MCCLK
Table 1. Select Function for Video, Audio, CPU, ASIC, and USB Clocks
VIDSEL
AUDSEL
VIDCLK
AUDCLK
CPUCLK
ASICCLK
USBCLK
Unit
L
L
54 (buffered)
12.288
64
32
48
MHz
L
M
Reserved
Reserved
64
32
48
MHz
L
H
54 (buffered)
16.9344
64
32
48
MHz
M
L
Reserved
Reserved
64
32
48
MHz
M
M
Reserved
Reserved
REFCLK/3
REFCLK/6
REFCLK/4
MHz
M
H
Reserved
Reserved
64
32
48
MHz
H
L
74.175824
12.288
64
32
48
MHz
H
M
Reserved
Reserved
64
32
48
MHz
H
H
74.175824
16.9344
64
32
48
MHz
Table 2. Select Function for MC Clock
MCSEL
MCCLK
MCCLK if VIDSEL = M and AUDSEL = M
UNIT
H
12 MHz
REFCLK/16
MHz
M
38.4 MHz
REFCLK/5
MHz
L
19.2 MHz
REFCLK/10
MHz
3


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