
MVTX2602
Data Sheet
92
Zarlink Semiconductor Inc.
13.6.28 Classes WFQ Credit Set 1
Accessed by CPU and serial interface
W0 - QOSC28[5:0] – CREDIT_C10 (CPU Address h533)
W1 - QOSC29[5:0] – CREDIT_C11 (CPU Address h534)
W2 - QOSC30[5:0] – CREDIT_C12 (CPU Address h535)
W3 - QOSC31[5:0] – CREDIT_C13 (CPU Address h536)
QOSC28 through QOSC31 represents one set of WFQ parameters for a 10/100 port. There are four such sets of
values. The granularity of the numbers is 1 and their sum must be 64. QOSC31 corresponds to W3 and QOSC28
corresponds to W0.
QOSC28[7:6]: Priority service type for the ports select this parameter set. Option 1 to option 4.
QOSC29[7]: Priority service allow flow control for the ports select this parameter set.
QOSC29[6]: Flow control pause best effort traffic only.
13.6.29 Classes WFQ Credit Set 2
Accessed by CPU and serial interface
W0 - QOSC32[5:0] – CREDIT_C20 (CPU Address h537)
W1 - QOSC33[5:0] – CREDIT_C21 (CPU Address h538)
W2 - QOSC34[5:0] – CREDIT_C22 (CPU Address h539)
W3 - QOSC35[5:0] – CREDIT_C23 (CPU Address h53a)
QOSC35 through QOSC32 represents one set of WFQ parameters for a 10/100 port. There are four such sets of
values. The granularity of the numbers is 1 and their sum must be 64. QOSC35 corresponds to W3 and QOSC32
corresponds to W0.
QOSC32[7:6]: Priority service type for the ports select this parameter set. Option 1 to option 4.
QOSC33[7]: Priority service allow flow control for the ports select this parameter set.
QOSC33[6]: Flow control pause for best effort traffic only.
13.6.30 Classes WFQ Credit Set 3
Accessed by CPU and serial interface
W0 - QOSC36[5:0] – CREDIT_C30 (CPU Address h53B)
W1 - QOSC37[5:0] – CREDIT_C31 (CPU Address h53C)
W2 - QOSC38[5:0] – CREDIT_C32 (CPU Address h53D)
W3 - QOSC39[5:0] – CREDIT_C33 (CPU Address h53E)
QOSC39 through QOSC36 represents one set of WFQ parameters for a 10/100 port. There are four such sets of
values. The granularity of the numbers is 1 and their sum must be 64. QOSC39 corresponds to W3 and QOSC36
corresponds to W1.
QOSC36[7:6]: Priority service type for the ports select this parameter set. Option 1 to option 4.