Cirrus Logic CS5534-BS - Manual (Page 28)

CS5532/34-BS
28 DS755F3
2.4.1. Channel-Setup Register Descriptions
CS1-CS0 (Channel Select Bits) [31:30] [15:14]
00 Select physical channel 1
01 Select physical channel 2
10 Select physical channel 3 (CS5534 only)
11 Select physical channel 4 (CS5534 only)
G2-G0 (Gain Bits) [29:27] [13:11]
For VRS = 0, A = 2; For VRS = 1, A = 1; Bipolar input span is twice the unipolar input span.
000 Gain = 1, (Input Span = [(VREF+)-(VREF-)]/1*A for unipolar).
001 Gain = 2, (Input Span = [(VREF+)-(VREF-)]/2*A for unipolar).
010 Gain = 4, (Input Span = [(VREF+)-(VREF-)]/4*A for unipolar).
011 Gain = 8, (Input Span = [(VREF+)-(VREF-)]/8*A for unipolar).
100 Gain = 16, (Input Span = [(VREF+)-(VREF-)]/16*A for unipolar).
101 Gain = 32, (Input Span = [(VREF+)-(VREF-)]/32*A for unipolar).
110 Gain = 64, (Input Span = [(VREF+)-(VREF-)]/64*A for unipolar).
WR3-WR0 (Word Rate) [26:23] [10:7]
The listed Word Rates are for continuous conversion mode using a 4.9152 MHz clock. All word rates will
scale linearly with the clock frequency used. The very first conversion using continuous conversion mode
will last longer, as will conversions done with the single conversion mode. See the section on Performing
Conversions and Tables 1 and 2 for more details.
Bit WR (FRS = 0) WR (FRS = 1)
0000 120 Sps 100 Sps
0001 60 Sps 50 Sps
0010 30 Sps 25 Sps
0011 15 Sps 12.5 Sps
0100 7.5 Sps 6.25 Sps
1000 3840 Sps 3200 Sps
1001 1920 Sps 1600 Sps
1010 960 Sps 800 Sps
1011 480 Sps 400 Sps
1100 240 Sps 200 Sps
All other combinations are not used.
D31(MSB) D30 D29 D28 D27 D26 D25 D24 D23 D22 D21 D20 D19 D18 D17 D16
CS1 CS0 G2 G1 G0 WR3 WR2 WR1 WR0 U/B OL1 OL0 DT OCD OG1 OG0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
CS1 CS0 G2 G1 G0 WR3 WR2 WR1 WR0 U/B OL1 OL0 DT OCD OG1 OG0
CSR
#1 Setup 1
Bits <127:112>
Setup 2
Bits <111:96>
#4 Setup 7
Bits <31:16>
Setup 8
Bits <15:0>