- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371179 > T7507 T7507 Quad PCM Codec with Filters, Termination Impedance, and Hybrid Balance PDF資料下載
參數(shù)資料
| 型號： | T7507 |
| 元件分類： | Codec |
| 英文描述： | T7507 Quad PCM Codec with Filters, Termination Impedance, and Hybrid Balance |
| 中文描述： | T7507四路PCM編解碼器與過濾器，終端阻抗，以及混合平衡 |
| 文件頁數(shù)： | 11/30頁 |
| 文件大小： | 558K |
| 代理商： | T7507 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
Lucent Technologies Inc.
11
Data Sheet
August 1999
Termination Impedance, and Hybrid Balance
T7507 Quad PCM Codec with Filters,
Functional Description
(continued)
Enable Transfers when CCLK Is Not Restricted to CSEL Low
(continued)
It is recommended that a polling process be used during idle periods to ensure that a loop closure detection is rec-
ognized by the microcontroller. The maximum nominal control clock (CCLK) frequency is 2.048 MHz. Also note
that DO is 3-stated based on the state of CSEL. This allows multiple DO outputs from multiple T7507s to be tied to
a common DO bus.
Table 2. Microprocessor Interface Descriptions
Symbol
CCLK
CSEL
Description
May be gapped; Maximum frequency is 2.048 MHz.
EN
pulses are generated on rising CCLK edges.
A low-going
CSEL
initiates a write to the T7507 via the DI pin. At the same time, this initiates a read
from the T7507 on the DO pin. Data is written and read on the first eight CCLK negative transitions
after CSEL goes low. Data is applied to the T7507 operation only if CSEL is low on the eighth nega-
tive edge of CCLK. Consecutive writes are not allowed; CSEL must go high for a minimum 50 ns
between write cycles. Additionally, data is shifted from the loop status latch to the serial shift register
on the first falling CCLK pulse after CSEL goes low.
Pin for serial input data. Input data is an 8-bit word which sends control information from the micro-
controller to the T7507, L8567 SLIC, and L7583 switch. T7507 information is codec state information
and PCM time-slot assignment. L8567 and L7583 control information is passed to these components
via parallel control output pins. See Input Word Definition section for additional details.
Pin for serial data output. Output data is an 8-bit word which sends status information from T7507 par-
allel status inputs to the microcontroller via the serial data interface. Status information is received
from the T7507 via the parallel control inputs from the L8567 SLIC and L7583 switch. See Output
Word Definition section for additional details.
DI
DO
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T7570 | T7570 Programmable PCM Codec with Hybrid-Balance Filter |
| T7630 | T7630 Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II) |
| T7630 | Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II)(雙 T1/E1 5.0V短距離通信終端器) |
| T8100A | H.100/H.110 Interface and Time-Slot Interchangers |
| T8102A | H.100/H.110 Interface and Time-Slot Interchangers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T75-08M2 | 制造商:The Cherry Corporation 功能描述: |
| T-751 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:Fly Back Transformer |
| T75-24C3 | 制造商:Stancor 功能描述:Power Transformer Triple Prim. Single Sec. 120V/208V/240V Prim. 24V Sec. Flange Mount |
| T7570 | 制造商:AGERE 制造商全稱:AGERE 功能描述:T7570 Programmable PCM Codec with Hybrid-Balance Filter |
| T-758 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:Transformer |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。