AccessRunner ADSL-USB Modem Device Set Data Sheet
3.3 CX20431 AFE Hardware Interface Signals
3.3.1 CX20431 AFE Hardware Signals, Pin Assignments, and Signal Definitions
CX20431 AFE hardware interface signals are shown in Figure 3-5.
CX20431 AFE pin assignments are shown in Figure 3-6.
CX20431 AFE hardware interface signals are defined in Table 3-13. DC characteristics are listed in Table 3-15.
P5200 UIC
AFE_SCLK
AFE_STB
AFE_CTRLIN
AFE_CTRLOUT
AFE_WAKEUP
AFE_RST#
CX11627 ADDP
RX00
RX08
TX00
AFE_STRB
+3.3V
+3.3V through filter
11
15
16
17
18
13
CLKIN
CTRL_STRB
CTRL_IN
CTRL_OUT
WAKEUP
POR
24
23
22
19
RX0
RX1
TX0
STROBE
INP_HYBR_RX
INM_HYBR_RX
1
2
OUTP_TX
OUTM_TX
7
8
VREFP 29
0.1u
F
21 DVDD
VC 30
5
9
AVDD
AVDD
CX20431
ANALOG FRONT END
(AFE)
0.1u
F
6
10
14
25
27
AVSS
AVSS
DVSS
DVSS
DVSS
32-PIN TQFP
VREFM 31
0.1u
F
INP_DRV
INM_DRV
HYBRID
CX20441 LD
10
uF
10
uF
10
uF
RBIAS 32
30K
INP_RX
INM_RX
NC
NC
NC
NC
3
4
12
20
26
28
NC
Figure 3-5. CX20431 AFE Hardware Interface Signals
100427_F3-05_HIS 20431 32T
100427B
INP_HYBR_RX
1
INM_HYBR_RX
2
INP_RX
3
INM_RX
4
AVDD
5
AVSS
6
OUTP_TX
7
OUTM_TX
8
24
RX0
23
RX1
22
TX0
21
DVDD
20
NC
CX20431
19
18
STROBE
WAKEUP
17
CTRL_OUT
100427_F3-06 PO_20431_32T
Figure 3-6. CX20431 AFE Pin Signals - 32-Pin TQFP
Conexant
3-19