si2439-a-gm Silicon Laboratories, si2439-a-gm Datasheet - Page 57

• Manufacturer Part Number: si2439-a-gm
• Description: V.92 And V.34 Isomodem With Global Daa
• Manufacturer: Silicon Laboratories

Pin #
28
29
30
31
32
33
34
35
36
37
38
CLKIN, XTAL1
GPIO24, D4
GPIO25, D3
GPIO16, D2
GPIO17, D1
GPIO18, D0
Pin Name
DCD, D6
ESC, D5
XTALO
INT
NC
Table 16. Si2494/39 Pin Descriptions (Continued)
Carrier Detect/Data Bit.
Active low carrier detect in serial mode. Bidirectional parallel bus data bit 6 in par-
allel mode.
Escape/Data Bit.
Hardware escape in serial mode. Bidirectional parallel bus data bit 5 in parallel
mode.
General Purpose Input Output Bit/Data Bit.
General purpose input output bit 24. Bidirectional parallel bus data bit 4 in parallel
mode.
General Purpose Input Output Bit/Data Bit.
General purpose input output bit 25. Bidirectional parallel bus data bit 3 in parallel
mode.
General Purpose Input Output Bit/Data Bit.
General purpose input output bit 16. Bidirectional parallel bus data bit 2 in parallel
mode.
General Purpose Input Output Bit/Data Bit.
General purpose input output bit 17. Bidirectional parallel bus data bit 1 in parallel
mode.
General Purpose Input Output Bit/Data Bit.
General purpose input output bit 18. Bidirectional parallel bus data bit 0 in parallel
mode.
Interrupt Output.
Active low interrupt output.
Clock Input/Crystal Oscillator Pin.
Provides support for parallel resonant AT cut crystals. A 4.9152 MHz or 32.768
crystal or a 32.768 kHz or 4.9152 or 27 MHz clock on XTAL1 is required.
Crystal Oscillator Pin.
Serves as the output of the crystal amplifier.
No Connect.
Rev. 1.0
Description
Si2494/39
57