W6694CD WINBOND [Winbond], W6694CD Datasheet - Page 25

• Manufacturer Part Number: W6694CD
• Description: USB Bus ISDN S/T-Controller
• Manufacturer: WINBOND [Winbond]

OMn_1-0
8.4.3 PIO Output Register 2
Value after reset: FFh
OMn_1-0
8.4.4 PIO Data Register
Value after reset: 00h
D7-0
8.5 B Channel Switch Registers
8.5.1 Layer1 B1 Receiver Select Register
Value after reset: 04h
RS2-0 Receiver Select
OM7_1
D7
7
7
0
7
Read Data of IO Pins 7-0
The corresponding bits are the present values of IO pins 7-0 (LOW=0, HIGH=1).
These bits select the source where layer 1 B1 channel will receive data from. Possible
values are:
000 (0): receive from PCM1
001 (1): receive from PCM2
010 (2): receive from Layer1 B1
100 (4): receive from USB B1
OM7_0
D6
0
6
6
6
Output Mode of IO Pin n (n = 3...0).
Setting corresponding bits drive output pin with different output mode.
Possible modes are:
00: always LOW
01: 0.5 second HIGH/LOW cycle
10: 1 second HIGH/LOW cycle
11: always HIGH
These bits have no effect on input pin.
The default value of this register makes pin PIO0 flash if ISDN clock is enabled.
Output Mode of IO Pin n (n = 7..4).
OM6_1
D5
5
5
0
5
D4
OM6_0
4
4
0
4
D3
3
3
0
OM5_1
PO2
PDATA Read
L1B1RS
- 25 -
3
RS2
D2
2
2
OM5_0
2
Publication Release Date: October 2000
Read/Write
Read/Write
RS1
D1
1
1
Preliminary W6694
OM4_1
1
Address 0Dh
RS0
D0
0
0
OM4_0
Address 0Ch
Address 0Eh
0
Revision A1