ST75951 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST75951' PDF : 21 Pages View PDF
ST75951
FUNCTIONAL DESCRIPTION (continued)
Table 4 : Control Register 0 : AFE Setting
Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Function
000
0
Main Receive input (INI)
000
1
Auxil. Receive input
000
0
0dB Receive Gain (INI)
000
1
+6dB Receive Gain
000
000
OVER = 320 (INI)
000
000
000
000
000
000
000
000
000
000
001
101
110
111
00
01
10
11
0
1
OVER = 384
OVER = 128
OVER = 192
OVER = 256
- Infin. attenuation XMIT (INI)
+2dB gain XMIT
6dB attenuation XMIT
0dB gain XMIT
M=1
M = 2 (INI)
0 0 0 0 00
0 0 0 0 01
0 0 0 0 10
0 0 0 0 11
0 0 0 1 00
0 0 0 1 01
0 0 0 1 10
0 0 0 1 11
Q=3
Q = 6 (INI)
Q=7
Q=8
Q = 4.5
Q = 5.5
Q = 6.5
Q = 7.5
Table 5 : Control Register 1 : GPIO Setting, Ring Bit
Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Function
001
Di3 Di2 Di1 Di0
DIR. ’0’ = (Inp INI), 1 = Out
001
MR M3 M2 M1 M0
MASK for INT. GPI ’0’ masked
(INI), ’1’ unmasked
DR
Digital Ring ’1’ on, ’0’ off (INI)
Table 6 : Control Register 2 : GPIO / RING Output Setting
Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Function
010
G3 G2 G1 G0
GPIOx output setting, read
input
010
RG
Read only, Ring
010
S
GPIO3 ’0’ In static Value (INI)
if set GPIO3 modulated at F0
010
xx0
GPIO0 In static Value (INI)
010
001
GPIO0 Modulate at F0
010
011
GPIO0 Modul. at F0/2
010
101
GPIO0 Modul. at F0/4
010
111
GPIO0 Modul. at F0/8
Note : GPI is in "high" state, any change on one Gx or RG non-masked put GPI in "low" state, one read on this register (@010) put GPI in
"hight" state.
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