CR10
CR10 can only be accessed in the configuration state and after the CSR has been initialized to 10H. The default
value of this register after power up is 00H (Table 94). CR10 is a test control register and all bits must be treated as
Reserved. Note: All test modes are reserved for SMSC use. Activating test mode registers may produce undesired
results.
Table 94 - CR10
BIT NAME
Test 8
BIT NO.
DESCRIPTION
0
1
2
3
4
5
6
7
Test 9
Test 10
Test 11
Test 12
Test 13
Test 14
Test 15
RESERVED FOR SMSC USE
CR11
CR11 can only be accessed in the configuration state and after the CSR has been initialized to 11H. The default
value of this register after power up is 80H (Table 95). CR11 is a test control register and all bits must be treated as
Reserved. Note: all test modes are reserved for SMSC use. Activating test mode registers may produce undesired
results.
Table 95 - CR11
BIT NO.
BIT NAME
Test 16
Test 17
Test 18
Test 19
Test 20
Test 21
Test 22
Test 23
DESCRIPTION
0
1
2
3
4
5
6
7
RESERVED FOR SMSC USE
CR12 - CR13
CR12 and CR13 are the FDC37N3869 Configuration Ports base address registers (Table 96). These registers are
used to relocate the Configuration Ports base address beyond the power-up defaults determined by the SYSOP pin
programming.
CR12 contains the Configuration Ports base address bits A[7:0]. CR13 contains the Configuration Ports base
address bits A[10:8].
The Configuration Ports base address is relocatable on even-byte boundaries; i.e., A0 = ‘0’.
At power-up the Configuration Ports base address is determined by the SYSOP pin programming. To relocate the
Configuration Ports base address after power-up, first write the lower address bits of the new base address to CR12
and then write the upper address bits to CR13. Note: Writing CR13 changes the Configuration Ports base address.
SMSC DS – FDC37N3869
Page 106
Rev. 10/25/2000
SMSC [ SMSC CORPORATION ]
