AM79M535-2JC AMD [Advanced Micro Devices], AM79M535-2JC Datasheet
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AM79M535-2JC
Manufacturer Part Number
AM79M535-2JC
Description
Metering Subscriber Line Interface Circuit
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM79M535-2JC.pdf
(18 pages)
Am79M535
Metering Subscriber Line Interface Circuit
DISTINCTIVE CHARACTERISTICS
BLOCK DIAGRAM
Notes:
1. Am79M535—E0 and E1 inputs; ring relay driver sourced internally to BGND; ground-key filter pin.
2. Current gain (K
B(RING)
Programmable constant-current feed
Line-feed characteristics independent of
battery variations
Programmable loop-detect threshold
On-chip switching regulator for low-power
dissipation
Pin for external ground-key noise filter
capacitor available
A(TIP)
BGND
VREG
VBAT
HPA
HPB
DA
DB
L
1
) = 1000.
Two-Wire
Interface
CHS
Switching Regulator
Signal Transmission
Ground-Key
Power-Feed
Controller
Detector
QBAT
CHCLK
Ground-key detect
Two-wire impedance set by single external
impedance
Performs polarity reversal
Tip Open state for ground-start lines
Supports 2.2 Vrms metering (12 and 16 kHz)
On-hook transmission
VCC
Ring-Trip Detector
Ring Relay Driver
Off-Hook Detector
Input Decoder
and Control
VEE
Publication# 16856 Rev: E
Issue Date: October 1999
AGND
RINGOUT
C1
C2
C3
E0
GKFIL
16856B-001
E1
DET
VTX
RD
RSN
RDC
Amendment: /0