le9531cmqc Zarlink Semiconductor, le9531cmqc Datasheet - Page 19

• Manufacturer Part Number: le9531cmqc
• Description: Ringing Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

Operating States
Note: Internal 100 k pull downs on B0, B1, B2 and 100 k pull down on TLDEN.
B0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B1
0
0
1
1
1
0
1
0
0
0
1
1
1
0
1
0
0 = off-hook or ring trip or thermal shutdown or ring ground.
1 = on-hook and no ring trip and no thermal shutdown and no ring ground.
B2
0
1
0
1
0
0
1
1
0
1
0
1
0
0
1
1
TLDEN
0/float
0/float
0/float
0/float
0/float
0/float
0/float
0/float
1
1
1
1
1
1
1
1
Table 7 - Supervision Coding
Active forward battery, Low DC current limit (25mA), Test Switch Off.
(Default Power Up State)
Active forward battery, High DC current limit (40mA), Test Switch Off.
Active reverse battery, Low DC current limit (25mA), Test Switch Off.
Active reverse battery, High DC current limit (40mA), Test Switch Off.
Ground start, Test Switch Off.
Scan, Test Switch Off.
Disconnect, Test Switch Off.
Ring, Test Switch Off.
Active forward battery, Low DC current limit (25mA), Test Switch On.
Active forward battery, High DC current limit (40mA), Test Switch On.
Active reverse battery, Low DC current limit (25mA), Test Switch On.
Active reverse battery, High DC current limit (40mA), Test Switch On.
Ground start, Test Switch On.
Scan, Test Switch On.
Disconnect, Test Switch On.
Ring, Test Switch On.
Zarlink Semiconductor Inc.
Le9531
NSTAT
19
Operating State
Data Sheet