CXD2559Q Ver la hoja de datos (PDF) - Intersil
Número de pieza
componentes Descripción
Fabricante
CXD2559Q Datasheet PDF : 11 Pages
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Timing Diagrams (Continued)
HI2559, CXD2559
BYTE 0
BYTE 1
BYTE 2
LSB
MSB LSB
MSB
ATT
L0 L1 L2 L3 L4 L5 L6 L7 R0 R1 R2 R3 R4 R5 R6 R7 P0 P1 P2 P3 E A X X
SHIFT
LATCH
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Description of Functions
FIGURE 5.
A. Crystal Oscillator Frequency Selection
[Related pins] XTLI, XTLO, XCLK, BCK, SIN
Although the 384 FS or 256 VS crystal oscillator can be con-
nected to XTLI and XTLO, the selection is determined
depending on whether the input serial data is 24-bit or 32-bit
slot. The frequency of the crystal oscillator is output from
XCLK as it is.
SERIAL DATA INPUT
BIT RATE
24-Bit Slot (48FS)
32-Bit Slot (64FS)
CRYSTAL OSCILLATOR XCLK
FREQUENCY
OUTPUT
384FS
256FS
384FS
256FS
B. Serial Data Interface
[Related pins] LRCK, BCK, SIN, MASL, MLSL
The serial data format consists of two channels per sampling
serial data represented by 2’s complement. In each channel,
the data is processed as a 24-bit slot when the crystal oscil-
lator frequency is 384 FS, and as a 32-bit slot when the crys-
tal oscillator frequency is 256 FS. 16 of these bits are used
as data.
MSL is used to select whether the serial data is arranged at
LSB first or MSB first. Also, MASL is used to select whether
the 16-bits of valid data is placed in the first or the second
half of the 32-bit slot.
CXD2500BQ
DA16
DA15
LRCK
XTAI
24-SLOT
48FS
IFS
384FS
CXD2559Q
SIN
XTLI
BCK
LRCK
XCLK
XTLO
384FS
MSL
H
L
MSB First
LSB First
MASL
H
L
24-BIT SLOT
Rearward Truncation
32-BIT SLOT
Frontward Truncation
Rearward Truncation
CXD2507Q
PCMD 24-SLOT
BCK
LRCK
48FS
IFS
XTAI 384FS
CXD2559Q
SIN
XTLI
BCK
LRCK
XCLK
XTLO
384FS
FIGURE 6. CONNECTION EXAMPLE FOR THE CD DSP
C. Control Mode
[Related pins] ATT, SHIFT, LATCH
The serial ports of ATT, SHIFT and LATCH are used to con-
trol functions such as the digital attenuator, output selection
and digital de-emphasis.
Data consists of 24-bits (3 bytes), which have the following
meanings:
4-8
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