參數(shù)資料
型號： MB86435PFV
廠商： FUJITSU LTD
元件分類： 通信及網(wǎng)絡(luò)
英文描述： RES 360 OHM 1/16W 5% 0402 SMD
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP64
封裝： PLASTIC, LQFP-64
文件頁數(shù)： 22/36頁
文件大小： 610K
代理商： MB86435PFV
22
MB86435
5. Power Saving Modes
(1) Mode Selection
The MB86435 power saving modes can be controlled by using the external control signal lines (3 lines). It is also
possible to apply power saving modes to the speaker amps with high power consumption levels by writing changes
to register settings. Whenever the MB86435 changes directly from a power-down mode to normal operating mode,
there is a possibility that speaker tones may be produced. The recommended sequence of coding changes to go
into normal mode is (VREF mode)
→
(Tone mode)
→
(Normal mode).
Power Saving Modes
Note:
: Operational,
×
: Power-down, H-Z: High impedance, H: H-level fixed
: High impedance may not be applied, depending on status of SW6, SW7, SW8.
ZA : EAR and XEAR are floating, however high resistance connection between EAR and XEAR.
ZB : TONE and XTONE are floating, however, high resistance connection between TONE and XTONE, and
between SGO and XTONE.
ZC : Floating, however high resistance connection between OP2 and BTO. Codec in [Normal] mode
operates with SYNC = 8 kHz, CLK = 2048 kHz.
When RAUD is operating, address 0111 data bit D1 value should be “0” (SW12 off).
In tone mode, address 0111 data bit D3 should be “0” (SW2 on), and address 0111 data bit D4 should be
“0” (SW14 off).
When the SYNC and CLK pin signals are fixed at either L-level or H-level, part of the codec unit will go into
power-down mode. At this time the PTBO signal will be SGC level, BTPO will be H-Z, and VRH output will
be approximately 4.0 V.
*
Ad-
dress
Ad-
dress
PS
C2
PS
C1
PS
C0 D4 D0
Mode
External
pins
Power
supply
current
(mA)
(typ)
Output pin status
Operating circuit status
D
SW8
D
SW7
D
SW9
D
SW6
Address
0110
SW6SW7 SW9SW8
T
X
R
D
S
S
P
B
O
M
J
B
V
O
B
B
E
X
J
C
V
T
S
R
R
E
T
A
SW6SW7SW9SW8
All
Power-
down
VREF
0 0 0 — —
—
—
ZA H-Z
—
—
ZB H-Z H
H-Z ZC H-Z H-Z H-Z
*
0.0005
1 0
— 1
— 1 0
— 1 0 0
— 1 0
— 1 0 0
— — 1 0
— — 1 0
— — 1 0
— — 1 0
— — 1 0
0 — —
—
—
—
ZA H-Z ZB
—
H-Z H
ZC H-Z H-Z H-Z
0.41
Tone
0
1
1
—
—
—
ZA H-Z ZB
—
H-Z H
H-Z H-Z H-Z
1.8
0
1
0
1
1
ZA H-Z ZB
1
H
H-Z H-Z H-Z
2.4
1
1
0
1
ZA
ZB
1
H
H-Z H-Z H-Z
4.4
*
H-Z
0
1
1
1
0
ZA H-Z
1
H
H-Z H-Z H-Z
6.6
1
1
1
1
ZB
0
H
H-Z H-Z H-Z
6.6
H-Z
H-Z
H-Z
0
0
1
1
ZB
1
6.0
H-Z
ZA
0
1
0
1
ZB
1
8.0
ZA
0
1
1
0
1
10.2
H-Z
ZA
0
1
1
1
ZB
0
10.2
H-Z
H-Z
H-Z
H-Z
0
0
0
0
0
18.2
Normal
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