cx29503 Mindspeed Technologies, cx29503 Datasheet - Page 159

• Manufacturer Part Number: cx29503
• Description: Cx29503 Broadband Access Multiplexer Data Sheet
• Manufacturer: Mindspeed Technologies

CX29503 Data Sheet
0x05—Alarm 2 Interrupt Status (ISR6)
All events reported in ISR6 are from dual-edge sources except the one-second timer [OneSec]. Any transition of
real-time status in the Alarm 2 Status register [ALM2; addr: 048] forces the corresponding ISR6 status bit
active (high). Active-high status is latched and held according to the LATCH_ALM bit [addr: 046]. Each event
triggers an interrupt if the corresponding IER6 bit is enabled [addr: 00D].
Unused bits are reserved and should be written to 0.
LOOPDN
LOOPUP
OneSec
0x06—Error Interrupt Status (ISR5)
All events in ISR5 are from rising edge sources. Each event is latched active (high), held according to the
LATCH_ERR bit [addr: 046], and triggers an interrupt if the corresponding IER5 bit is enabled [addr: 00E].
Unused bits are reserved and should be written to 0.
CERR
MERR
FERR
29503-DSH-002-B
RESERVED
LOOPDN
7
7
RESERVED
Loss/Recovery of Inband Loopback Deactivate Code—Reports any change in real-time status
of the inband loopback deactivate code detector.
Loss/Recovery of Inband Loopback Activate Code—Reports any change in real-time status of
the inband loopback activate code detector.
One-Second Timer Event—It is not recommended to use this timer for the CX29503 because
there would be too many interrupts to process. Use the One-Second interrupt in the Top Level
Interrupt Status register.
CRC6/CRC4 Block Error—Applicable to ESF and MFAS modes only, reads 0 in other modes.
CERR indicates one or more bit errors have been found in the received CRC-6 or CRC-4
checksum block pattern.
MFAS Pattern Error—Applicable only in E1 mode (reads 0 in T1 mode)—Indicates one or
more bit errors in the received MFAS alignment pattern.
Frame Error—Ft/Fs/FPS/FAS Pattern Error—Indicates one or more Ft/Fs/FPS frame bit errors
or FAS pattern errors. In the CX28394/5/8 data sheet, see
which frame bits are monitored according to the selected receive framer mode.
LOOPUP
6
6
0 = no event
1 = LOOPDN code transition
0 = no event
1 = LOOPUP code transition
0 = no timer event
1 = OneSec timer expired or rising edge of OneSec input
0 = no error
1 = CRC error
0 = no error
1 = MFAS error
0 = no error
1 = frame error
RESERVED
—
5
5
Mindspeed Technologies™
Preliminary Information
—
—
4
4
RESERVED
CERR
3
3
RESERVED
Tables A-1–A-6
—
2
2
RESERVED
MERR
1
1
for a description of
Register Description
(SET TO 0)
OneSec
FERR
0
0
8
-
29