Z02215 Datasheet, PDF (48/74 Pages) Zilog, Inc. – Single Chip Modem with Integrated Controller, Data Pump, and Analog Front End

Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
42
Table 7. Modem S-Registers (Continued)
Register Range
S91
0–255
Default Units
0x88
Description
PttBitmap (11)
Bit 0: FORCE_1800HZ_GT, set to force use of 1800 HZ
guard tone.
Bit 1: CALLTONE_ENABLED, set to force use of V.25 calling
tone.
Bit 2: DO_SWISS_BUSY, set to use the Swiss busy
workaround.
Bit 3: PTT_TEST_CMD, set to enable the AT&HT command
(PTT test).
Bit 4: BLIST_ENABLED, set to enable blacklisting. See
BL_MINDELAY_S and related parameters.
Bit 5: FRANCE_CALL_DELAY, set to force France call
originate delay after ring.
Bit 6: VOICE_ANSWER, set to enable detection of voice
answer.
Bit 7: DTMF_S11, set to use S11 instead of
DTMFINTERDIGITMS for the delay between dialed DTMF
digits.
PS001907-0904
Modem S-Registers