QT2032-EKG-1A2 Applied Micro Circuits Corporation, QT2032-EKG-1A2 Datasheet - Page 88

• Manufacturer Part Number: QT2032-EKG-1A2
• Manufacturer: Applied Micro Circuits Corporation

Specifications of QT2032-EKG-1A2

• Lead Free Status / RoHS Status: Supplier Unconfirmed

QT2022/32 - Data Sheet: DS3051
A AMCC-specific DOM write command has been added. The write control is via MDIO vendor specific register
1.C004h. The write can be a full 256 byte write or a single byte write to the address specified in MDIO register bits
1.C002h.7:0. The write command status registers have been added to the unused/undefined upper bits of the
DOM read command register. This allows for clearing of either read or write command failures with a single MDIO
register read. The QT2022/32 EEPROM_PROT pin must be pulled low to enable writing to the DOM MDIO regis-
ters and to the DOM device registers.
Table 36: DOM Control Registers
Before doing a DOM MDIO register write and subsequent DOM device write, the DOM must be idle and not be in
periodic update mode. This is to ensure that a DOM read does not overwrite the DOM MDIO registers before data
has been transferred to the DOM device.
If a DOM (NVR) device access is queued and an NVR (DOM) device access which is in progress fails, then the
NVR (DOM) command failure flag is set and the DOM (NVR) device access is allowed to proceed. No NVR (DOM)
commands are accepted while the NVR (DOM) command failure state is set. this state must be cleared before
another NVR (DOM) command can take place.
88
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Bit
DOM Read Commands / Update Rate (R/W)
0
0
1
1
DOM Read Command Status (RO, LH)
reserved (RO)
reserved (RO)
reserved (RO)
reserved (RO)
reserved (RO)
reserved (RO)
reserved (RO)
reserved (RO)
DOM Write Command Status (RO, LH)
reserved (RO)
reserved (RO)
bit1 bit0 Command
bit3 bit2 Command Status
0
0
1
1
bit 13 bit12
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
write of 00 initiates a single update of MDIO DOM registers
periodic update of MDIO DOM registers every 60 seconds
periodic update of MDIO DOM registers every 10 seconds
periodic update of MDIO DOM registers every 1 second
no command
command completed
command in progress
previous command failed
Command status
no command
command completed
command in progress
previous command failed
DOM Control/Status Register
PMA/PMD Vendor Specific
AppliedMicro - Confidential & Proprietary
1.A100h
DOM Write Command (R/W)
bit 11 bit10
DOM 256 byte write cycle burst size (R/W)
size
16
reserved (RO)
reserved (RO)
reserved (RO)
reserved (RO)
reserved (RO)
EEPROM calculated checksum
(RO)
1
8
1
0
0
1
1
DOM Write Control Register
PMA/PMD Vendor Specific
bit 15
0
0
1
1
0
1
0
1
EEPROM Checksum/
Command
bit14
idle, default
reserved
write 1 byte
write 256 bytes
1.C004h
0
1
0
1
default
Revision 5.11