參數(shù)資料
型號(hào)： W6694CD
廠商： WINBOND ELECTRONICS CORP
元件分類： 通信及網(wǎng)絡(luò)
英文描述： USB Bus ISDN S/T-Controller
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP48
封裝： 7 X 7 MM, 1.40 MM, PLASTIC, LQFP-48
文件頁(yè)數(shù)： 33/42頁(yè)
文件大?。?/td> 567K
代理商： W6694CD
Preliminary Data Sheet
W6694A USB-ISDN S/T-Controller
-33-
Publication Release Date: May, 2001
Revision 1.03
Note:
The ISDN line must plug-in for the PCM port to take effect.
8.5.6 PCM2 Receiver Select Register
Value after reset: 00h
7
6
0
0
EPCM Enable PCM Transmit/Receive
0: Disable data transmit/receive to/from PCM port. The frame synchronization clock is held LOW. The bit
synchronization clock is held LOW if both PCM ports are disabled.
1: Enable data transmit/receive to/from PCM port. The frame synchronization clock is active. The bit
synchronization clock is active.
RS2-0 Receiver Select
These bits select the source where PCM2 channel will receive data from. Possible values are:
000 (0): receive from PCM1
001 (1): receive from PCM2
010 (2): receive from Layer1 B1
011 (3): receive from Layer1 B2
100 (4): receive from USB B1
101 (5): receive from USB B2
Note:
The PCM ports operate with the clock input from ISDN line, therefore the ISDN line must plug-in for the PCM port to
take effect.
PCM2RS
Read/Write Address 13h
5
0
4
0
3
2
1
0
EPCM
RS2
RS1
RS0
8.6 EEPROM Access Registers
8.6.1 EEPROM Read/Write Address
7
6
CM1
CM0
CM1-0 Command for Read/Write
These bits indicate the possible operation to the serial EEPROM:
00: Read 16 bits data from address A5-0
10: Write 16 bits data to address A5-0
01: Erase all of EEPROM, ignore A5-0
11: Write all of EEPROM with data EPWDH + EPWDL, ignore A5-0
A5-0
Address
Address corresponds to a 16-bit word. Once this register is written, W6694A begin to read or write one 16 bits word
from or to serial EEPROM. When the read or write operation is completed, an interrupt bit is set at ISTA:EPAC.
EPADR
Write
Address 14h
5
4
3
2
1
0
A5
A4
A3
A2
A1
A0
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