27
4.6.5
EM405-8 Configuration/Status Registers
The EM405-8 contains a set of registers that are used to identify the carrier, configure the carrier,
and retrieve status from the carrier. These registers are independent of the M-Modules residing
on the board. Table III summarizes the register map. Bit level details of each register can be
found in Figure 11. These registers are accessed using the
Read Data
and
Write Data
commands with the module field of the command set to ‘0’.
Table III. Register Summary
Offset
Register
0x00
Reset Error & Manufacturer Identification
0x02
Device Identification
0x04
Hardware Version
0x06
Firmware Version
0x08
Reset Control
0x0A
Fan Control & Temperature Status (Fan Area)
0x0C
Temperature Status (Carrier Logic Area)
0x0E
Temperature Status (M-module Area)
0x10-0x1F
M-module Trigger A Control
0x20-0x2F
M-module Trigger B Control
0x30-0x3F
LVDS Trigger Control
0x40-0x4F
Reserved
0x50
External Input TTL Trigger Control
0x52
External Input TTL Trigger Control
0x54
Reserved
0x56
Reserved
0x58
Edge Clock 0 & 1 Source Control
0x5A
Edge Clock 2 & 3 Source Control
Note: Registers 0x10 through 0x5A are only available on the
-0001 version.
Reset Error & Manufacturer Identification (0x00): A read of this register will return the 12-bit
manufacturer ID value of the EM405 and the reset error bit. The manufacturer ID field is read-
only. Writing a ‘1’ to the reset error bit will clear the error condition. Refer to section 4.6.1 for
details on error handling.
Device Identification (0x02): This read-only register returns the device ID of the EM405-8.
Hardware Version (0x04): This read-only register returns the hardware logic version number of
the EM405-8 being accessed.
Firmware Version (0x06): This read-only register returns the firmware version number of the
EM405-8 being accessed.
Reset Control (0x08): This read/write register can be used to reset the M-Modules residing on
the EM405-8. An independent reset bit is available for each module. Writing a ‘1’ to a reset bit
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