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參數(shù)資料
| 型號(hào)： | T8535B |
| 元件分類： | Codec |
| 英文描述： | T8535B/T8536B Quad Programmable Codec |
| 中文描述： | T8535B/T8536B四可編程編解碼器 |
| 文件頁(yè)數(shù)： | 10/50頁(yè) |
| 文件大小： | 929K |
| 代理商： | T8535B |
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10
Agere Systems Inc.
Preliminary Data Sheet
September 2001
T8535B/T8536B Quad Programmable Codec
Pin Information
(continued)
Table 6. Pin Assignments, 100-Pin TQFP, Common Functions
Pin
1
Name
FILTV
NC
Type
PWR
—
Name/Description
Frequency Synthesizer Power (5 V).
This pin must be tied to V
DD
.
No Connect.
This pin may be used as a tie point.
2, 3, 7—10,
12, 15, 22, 32,
33, 35,
37—40,
44, 50,
59—64, 70,
85, 91—96
4
SGND
GND
Synthesizer Ground.
Connect to digital ground. A common AGND, DGND,
SGND plane is highly recommended.
Digital Ground.
Logic ground and return for logic power supply. A common
AGND, DGND, SGND plane is highly recommended.
Digital Power Supply (5 V).
PCM Frame Strobe Input.
This 8 kHz clock must be derived from the same
source as BCLK.
PCM Bit Clock Input.
This lead is used to develop internal clocks for certain
clock rates.
PCM Transmit Data Output 0.
This is a 3-state output.
PCM Receive Data Input 0.
Backplane Line Driver Enable 0 (Active-Low).
Normally, these open-drain
outputs are floating in a high-impedance state. When a time slot is active on
DX0, this output pulls low to enable a backplane line driver.
PCM Transmit Data Output 1.
This is a 3-state output.
PCM Receive Data Input 1.
Backplane Line Driver Enable 1 (Active-Low).
Normally, these open-drain
outputs are floating in a high-impedance state. When a time slot is active on
DX1, this output pulls low to enable a backplane line driver.
Power-On Reset.
A low causes a reset of the entire chip. This pin may be
connected to DGND with a 0.1
μ
F capacitor for a power-on reset function, or it
may be driven by external logic. This lead has an internal pull-up.
Serial Data Output.
This is a 3-state output.
Serial Data Input.
Serial Data Clock Input.
Chip Select Input.
This lead determines the interval that the serial interface is
active.
Serial Interface Select.
Leaving this lead open places the serial interface in
the normal mode; grounding it places the interface into the byte-by-byte mode.
This lead has an internal pull-up.
20, 51, 71, 84
DGND
GND
25, 45, 67, 83
68
V
DD
FS
PWR
I
69
BCLK
I
72
73
74
DX0
DR0
TSX0
O
I
O
75
76
77
DX1
DR1
TSX1
O
I
O
82
RST
I
86
87
88
89
DO
DI
DCLK
CS
O
I
I
I
90
INTS
I
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