RC224ATL/224ATLV
3.0 Pin Descriptions
EmbeddedModem Family
Table 3-3. RC224ATL/224ATLV 100-Pin PQFP Pin Assignments—Serial (3 of 4)
Pin Number
Signal Label
I/O Type(1)
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
XTLO
NC
OE
—
DGND
DGND
NC
DGND
DGND
—
—
NC
DSR
CTS
DCD
CI/HS
NMI
DGND
NC
DO
DO
DO
DO
(6)
DGND
—
MR
DO
DO
DO
DI
RI
DCDL
IDLENO
RING
DI
NC
—
—
NC
SEREN
WAKEUP
NVRCS
NVRDIO
(A/A1)
DGND
DGND
DI
DI
DO
DIO
DO
DGND
DGND
NOTE(S):
(1)
I/O Types are described in Figure 7-5, Digital Interface Characteristics and
Figure 7-6, Analog Interface Characteristics.
MI = Modem Interconnection
NC = No external connection (may have internal connection, leave pin disconnected
(open)).
AGND is analog ground and DGND is digital ground.
Connect to VCC through 4.7 kΩ.
Connect ATL to + 5 VCC, ATLV to + 3 VCC.
(2)
(3)
(4)
(5)
(6)
D224ATLVDSC
Conexant
3-9
CONEXANT [ CONEXANT SYSTEMS, INC ]
