Shelf Manager ACB-VI
Hardware Address
17
R1.2, March 2018
10 Hardware Address
The PCA9554 on the ACB-VI reads the hardware address and parity bit from the backplane
connector of the dedicated Shelf Manager slot.
Geographic address pins (HA[0], HA7) at the Backplane connector determine bit 0 and bit 7,
bit 1 to bit 6 are hardware-coded on the Shelf Manager PCB. The ShMM-700R software
determines the hardware address by reading the input port register of the PCA9554 at
address 0x23.
Figure 17:
Table 3: Shelf Manager Hardware and IPMB Addresses
11 RESET
11.1 Reset Input / Output
The ACB-VI provides a RESET push button on the front panel. It is connected to the ShMM-
700's MRST_IN# signal.
8-bit
GPIO port
(PCA9554)
0x23
ACB-VI Carrier Board
Backplane Connector
I2C4 (local)
ShMM-700R
ShMM-700R Connector
I/O 0
I/O 1
I/O 2
I/O 3
I/O 4
I/O 5
I/O 6
I/O 7
HA 0
HA 7 (Parity)
3.3 V
HW-Addr.
IPMB-Addr.
HA[0]
HA7
Shelf Manager 1
0x08
0x10
GND
GND
Shelf Manager 2
0x09
0x12
n.c.
n.c.
