W6694CD WINBOND [Winbond], W6694CD Datasheet - Page 18

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

EEPROM Contents :
8. REGISTER DESCRIPTIONS
8.1 Interrupt Registers
These registers will be read by Interrupt-IN packet only, so the USB host will periodically receive
these data. These registers can not be read by Bulk-IN transfer.
8.1.1 Interrupt Status Register
This register indicates interrupt occurred in various interrupt sources. This register is cleared
automatically after it is read and successfully ACKed by the USB host.
Values after reset: 00h
ICC
MOC
PIOIC Programmable IO Port Input Signal Changed
8.1.2 Layer 1 Command/Indication Register CIR
Value after reset: 0Fh
CIR3-0 Layer 1 Indication Code
ICC
7
0
7
A change of value in at least one input IO pin is detected. The input IO pins that change value
can be identified in PIO Input Change Register (PICR) register.
Layer 1 Indication Code Change
A change of value in the received indication code has been detected. The new code is in
Layer 1 Command/Indication Register (CIR) register.
Monitor Channel Status Change
A change of value in the GCI mode Monitor Channel Interrupt Register (MOIR) has occurred.
Value of the received layer 1 indication code for S/T interface. Note these bits have a buffer
size of two.
MOC
6
0
6
Offse
PIOIC
0
2
4
t
5
0
5
(Byte)
Size
2
2
2
4
0
4
0
ISTA
CIR3
3
0
3
Device release number
- 18 -
Vendor ID
Contents
Device ID
CIR2
Read_clear
Read
2
0
2
15
0
CIR1
0
1
1
Preliminary W6694
CIR0
0
0
0