W925EP01 Datasheet, PDF (29/108 Pages) Winbond – 8-BIT CID MICROCONTROLLER

W925EP01/ W925EP01FG
RNG: Ring detection bit. High will be indicated the detection of line reversal and/or ringing.
CID FLAG GENERATOR
(initial=00H)
Bit:
7
6
5
4
3
2
1
0
-
-
-
FSF DTMFDF FDRF ALGOF RNGF
Mnemonic: CIDFG
Address: B2h
FSF: Set when FSK Latch clock low to high. Cleared by software
DTMFDF: Set when DTMFD low to high. Cleared by software
FDRF: Set when FDR low to high. Cleared by software.
ALGOF: Set when ALGO low to high. Cleared by software.
RNGF: Set when RNG low to high. Cleared by software.
CID POWER CONTROL REGISTER
(initial=00H)
Bit:
7
6
5
4
3
2
1
0
-
-
-
CIDE
-
FSKE CASE DTMFE
Mnemonic: CIDPCR
Address: B3h
CIDE: Global enable CID function. Low to disable all functions of CID parts.
FSKE: Enable FSK demodulation circuit.
CASE: Enable Dual Tone Alert Signal detection circuit.
DTMFE: Enable DTMF demodulation circuit.
FSK DATA REGISTER
(initial=XXH)
Bit:
7
6
5
4
3
2
1
0
FD7 FD6 FD5 FD4 FD3 FD2 FD1 FD0
Mnemonic: FSKDR
Address: B4h
FD7-0: 8 bits FSK demodulated data.
DTMF DATA REGISTER
(initial=XXH)
Bit:
7
6
5
4
3
2
1
CASH CASL DTMFH DTMFL DD3 DD2 DD1
Mnemonic: DTMFDR
Address: B5h
CASH: Set when Dual Tone Alert Signal high tone is detected.
CASL: Set when Dual Tone Alert Signal low tone is detected.
DTMFH: Set when DTMF high tone is detected.
DTMFL: Set when DTMF low tone is detected.
DD3-0: 4 bits DTMF demodulated data.
0
DD0
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Publication Release Date: Apr. 10, 2006
Revision A2