r6781-12 Conexant Systems, Inc., r6781-12 Datasheet - Page 37

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

EmbeddedModem Family
D224ATLVDSC
Table 3-4. RC224ATL/224ATLV 100-Pin PQFP Pin Assignments—Parallel (1 of 4)
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
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
4
5
6
7
8
9
Conexant
NC
IDLEN1
RAGCO
RADCI
TSTBO
NC
NC
NC
RSTBO
RRSTO
TRSTO
MODEO
TDACO
SLEEP
NC
DGND
MODEI
VAA
SPKR
NC
AGND
TXA2
TXA1
NC
RXA
NC
(3)
Figure 7-5, Digital Interface Characteristics
Characteristics.
Signal Label
DI
MI
MI to RADCO
MI to TSTBI
MI to RSTBI
MI to RRSTI
MI to TRSTI
MI to MODEI
MI to TDACI
DO
DGND
MI to MODEO
O(DF)
AGND
O(DD)
O(DD)
I(DA)
(2)
to RAGCI
(4)
I/O Type
and
—
—
—
—
—
—
—
—
—
(1)
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