參數(shù)資料
型號(hào): AM79C32AVC
廠商: ADVANCED MICRO DEVICES INC
元件分類(lèi): 數(shù)字傳輸電路
英文描述: Digital Subscriber Controller⑩ (DSC⑩) Circuit
中文描述: DATACOM, DIGITAL SLIC, PQFP44
封裝: PLASTIC, TQFP-44
文件頁(yè)數(shù): 65/101頁(yè)
文件大?。?/td> 1607K
代理商: AM79C32AVC
Am79C30A/32A Data Sheet
65
APPLICATIONS
ISDN Feature Phone
This basic feature phone is the ISDN equivalent to the
common analog phone. The keypad can be a simple
four-by-four single-pole switch-matrix or a larger-matrix
to provide full-key system features. The display option
illustrated in Figure 14 can be included in any of theap-
plications shown in this section.
ISDN Feature Phone with Parallel and Serial Data
Ports Plus Other Peripherals
Access to the CCITT R reference interface is provided
via both the serial and parallel ports in Figure 15. This
application may easily have voice capability added by
using a DSC circuit in place of the IDC circuit. Figure 16
illustrates applications with increased B-channel data
processing requirements.
Am79C30A DSC Circuit
Audio
Processor
Telephone
Speaker
PP
B-Channel
MUX
LIU
OSC
MPI
D-Channel
DLC
Surge
Protection
S/T
Interface
Hook Switch
MCLK
RAM
ROM
Interrupt
Microcontroller
Power Reversal Interrupt
5V
Power
Controller
LCD Display
Keypad
09893H-10
Figure 14.
ISDN Telephone
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