r6781-12 Conexant Systems, Inc., r6781-12 Datasheet - Page 35

• Manufacturer Part Number: r6781-12
• Description: Embedded Modem Family
• Manufacturer: Conexant Systems, Inc.

EmbeddedModem Family
D224ATLVDSC
Table 3-3. RC224ATL/224ATLV 100-Pin PQFP Pin Assignments
NOTE(S):
(1)
(2)
(3)
(4)
(5)
(6)
I/O Types are described in
Figure 7-6, Analog Interface
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 k .
Connect ATL to + 5 VCC, ATLV to + 3 VCC.
Pin Number
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
Conexant
XTLO
NC
DGND
DGND
NC
NC
DSR
CTS
DCD
CI/HS
NMI
DGND
NC
MR
RI
DCDL
IDLENO
RING
NC
NC
SEREN
WAKEUP
NVRCS
NVRDIO
(A/A1)
DGND
DGND
Figure 7-5, Digital Interface Characteristics
Characteristics.
Signal Label
OE
DGND
DGND
DO
DO
DO
DO
(6)
DGND
DO
DO
DO
DI
DI
DI
DI
DO
DIO
DO
DGND
DGND
—
Serial (3 of 4)
I/O Type
and
—
—
—
—
—
—
(1)
3-9