參數(shù)資料
型號: SI2401FS10-EVB
廠商: Silicon Laboratories Inc
文件頁數(shù): 62/76頁
文件大?。?/td> 0K
描述: BOARD EVAL SI2401 UART INTERFACE
標(biāo)準(zhǔn)包裝: 1
系列: ISOmodem®
主要目的: 電信,調(diào)制解調(diào)器
嵌入式:
已用 IC / 零件: SI2401
主要屬性: 雙路 RJ-11 連接至電話線路,音頻連接器
次要屬性: RS-232,TTL 串行和 USB 接口
已供物品: 板,調(diào)制解調(diào)器,電源
相關(guān)產(chǎn)品: 336-1095-ND - IC ISOMODEM SYSTEM-SIDE 16SOIC
其它名稱: 336-1167
Si2401
Rev. 1.0
65
Reset settings = 0000_0000 (0x00)
SF5 (DAA5). DAA Low Level Functions 5
Bit
D7D6
D5D4D3
D2D1D0
Name
OHS[1:0]
ILIM
RZ
RT
Type
R/W
Bit
Name
Function
7:6
Reserved
Read returns zero.
5:4
OHS[1:0]
On-Hook Speed.
These bits set the amount of time for the line-side device to go on-hook. The on-hook
speeds specified are measured from the time the register is written until loop current
equals zero.
OHS[1:0]
Mean On-Hook Speed
00
Less than 0.5 ms
01
3 ms ±10% (Meets ETSI standard)
1X
20 ms ±10% (Meets Australian spark quenching spec)
3ILIM
Current Limiting Enable.
0 = Current limiting mode disabled.
1 = Current limiting mode enabled. This mode limits loop current to a maximum of 60 mA
per the TBR21 standard.
2RZ
Ringer Impedance.
0 = Maximum (high) ringer impedance.
1 = Synthesized ringer impedance used to satisfy a maximum ringer impedance specifi-
cation in countries, such as Poland, South Africa, and Slovenia.
1
Reserved
Do not modify.
0RT
Ringer Threshold Select.
Used to satisfy country requirements on ring detection. Signals below the lower level do
not generate a ring detection; Signals above the upper level are guaranteed to generated
a ring detection.
0 = 13.5 to 16.5 VRMS
1 = 19.35 to 23.65 VRMS
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