ml7005mb Oki Semiconductor, ml7005mb Datasheet - Page 18

• Manufacturer Part Number: ml7005mb
• Description: Dtmf Transceiver Ml7005dtmf Transceiver
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Status Register STR
Bit No.
D3
D2
D1
D0
D3
SP
Name
CPDR
FXDR
DETF
SP
FXDR
D2
This bit is used to indicate whether the DTMF receive signal is being received.
This bit is used to indicate whether the FAX signal (FX) is being received.
When a call progress tone is received (CPDO="1"), this bit is forced to be "0".
When the DOEN register is "0", this bit also is fixed at "0". This bit has the same
function as that of the FXDO.
This bit is used to indicate whether the call progress tone is being received.
When the DOEN register is "0", this bit is fixed at "0". This bit has the same function
as that of the CPDO pin.
This is a flag to indicate that a detector has changed its status from a non-detect state to
a detect state.
This bit is "1" when:
This bit remains "0" even if a 1300 Hz or 400 Hz signal is input, because the FXDR
and CPDR are fixed at "0" when the DOEN regsiter is "0".
When the processor has read the status register, this bit is reset to "0".
When the processor does not read the status register after a signal is detected, this bit is
"0" after the detected signal disappears.
"0" : Indicates that the valid DTMF signal is being received.
"1" : Indicates that the DTMF signal is not being received.
"0" : Indicates that the FAX signal (FX) is not being received.
"1" : Indicates that the valid FAX signal (FX: 1300 Hz) is being received.
"0" : Indicates that the call progress tone is not being received.
"1" : Indicates that the valid call progress tone (400 Hz) is being received.
(1) SP is changed from "1" to "0",
(2) FXDR is changed from "0" to "1", or
(3) CPDR is changed from "0" to "1".
CPDR
D1
DETF
D0
Description
ML7005
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