Intel MD566X - Manual (Page 105)

56K V.92 Data, Fax, and Voice Chipset
Programmer’s Guide Intel Confidential 105
S21 48
Bit-Mapped Options : S21 is a read-only register that indicates AT command set-
tings.
Bit 0 Reserved
Bit 1 Reserved
Bit 2 Reserved
Bits 4-3 00 &D0 is selected
01 &D1 is selected
10* &D2 is selected
11 &D3 is selected
Bit 5 0 &C0 is selected
1* &C1 is selected
Bit 6 0* &S0 is selected
1 &S1 is selected
Bit 7 0* Y0 is selected
1 Y1 is selected
S22 118
Bit-Mapped Options : S22 is a read-only register that indicates AT command set-
tings.
Bits 1-0 00 L0 is selected
01 L1 is selected
10* L2 is selected
11 L3 is selected
Bits 3-2 00 M0 is selected
01* M1 is selected
10 M2 is selected
11 M3 is selected
Bits 6-4 000 X0 is selected
001 Reserved
010 Reserved
011 Reserved
100 X1 is selected
101 X2 is selected
110 X3 is selected
111* X4 is selected
Bit 7 0* &P0 is selected
1 &P1 is selected
Table 7-1. S-Register Command Descriptions (Continued)