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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 12/50頁 |
| 文件大小： | 929K |
| 代理商： | T8535B |
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12
Agere Systems Inc.
Preliminary Data Sheet
September 2001
T8535B/T8536B Quad Programmable Codec
Pin Information
(continued)
Table 8. Pin Assignments, 64-Pin TQFP, Common Functions
Pin
1
2
Name
FILTV
SGND
Type
PWR
GND
Name/Description
Frequency Synthesizer Power (5 V).
This pin must be tied to V
DD
.
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).
11, 32,
44, 56
15, 27,
41, 55
42
DGND
GND
V
DD
PWR
FS
I
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 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 con-
nected 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 nor-
mal mode; grounding it places the interface into the byte-by-byte mode. This lead
has an internal pull-up.
43
BCLK
I
45
46
47
DX0
DR0
TSX0
O
I
O
48
49
50
DX1
DR1
TSX1
O
I
O
54
RST
I
57
58
59
60
DO
DI
DCLK
CS
O
I
I
I
61
INTS
I
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