FX806A Ver la hoja de datos (PDF) - CML Microcircuits
Número de pieza
componentes Descripción
Fabricante
FX806A Datasheet PDF : 13 Pages
| |||
Command Loading and Timing
CHIP SELECT
t CSOFF
SERIAL CLOCK
t CSE
t NXT
t NXT
t CSH
COMMAND DATA
t CK
76 54 3 2 10
76 54 3 2 10
MSB
LSB
ADDRESS/COMMAND
BYTE
FIRST DATA BYTE
Inter-byte period logic level is not important.
Fig.6 “C-BUS” Timing Information
7 6543 2 10
LAST DATA BYTE
Parameter
Min.
Typ.
Max.
Unit
Notes
t
CSE
t
CSH
tCSOFF
t
NXT
t
CK
2.0
–
4.0
–
2.0
–
4.0
–
2.0
–
–
µs
–
µs
–
µs
–
µs
–
µs
(1) Command Data is transmitted to the peripheral MSB (bit7) first, LSB (bit0) last.
(2) Data is clocked into the peripheral on the rising clock edge.
(3) Loaded data instructions are acted upon at the end of each individual, loaded byte.
(4) To allow for differing µController serial interface formats, the FX806A will work with either polarity Serial
Clock pulses.
MSB
GENERAL RESET
LSB
Sets the Control, Mode and Volume Commands to 00 H
MSB CONTROL COMMAND LSB
7 654 3 2 10
1 DATA BYTE
TABLE 2
MSB
MODE COMMAND
LSB
7 654 3 2 10
1 DATA BYTE
TABLE 3
MSB
VOLUME SET
LSB
7 654 3 2 10
1 DATA BYTE
TABLE 5
7 654 3 2 10
MSB
LSB
MODULATOR LEVELS SET
2 DATA BYTES – BYTE 1 (loaded first)
Fig.7 Examples of “Command Data” Configurations
76 54 3 2 10
BYTE 0 (loaded last)
TABLE 4
To assist in rapid setting, the “quick-reference” guide below should be used together with Figure 5.
Control
Bit 7
6
5
4
3–0
Mode
Bit 7
6
5
4
3
2–0
A/C = 10H
Audio Out (Rx) Enable
Modulator Drive Enable
Pre-Emphasis Enable
Input Select (Rx/Tx)
Input Level Set (-4dB to 10dB)
A/C = 11H
Drive Source
Deviation Limiter Enable
VOGAD Enable
De-Emphasis Enable
Signal Select
Process Gain Set (-4dB to 3dB)
Table 6 “Quick-Reference” to Command Allocations
Modulator Levels
Byte 1
Bit 7 – 5
4–0
Byte 2
7–5
4 –0
Volume Set
Bit 7 – 6
5
4–0
A/C = 12H
“0”
Mod 1 Attenuation
(0 to 12.4dB)
“0”
Mod 2 Attenuation
(0 to 6.2dB)
A/C = 13H
“0”
Powersave
Volume Set Attenuation
(0 to 48dB)
9
Share Link: 