Altera CPRI IP Core - Manual (Page 134)

7–18 Chapter 7: Software Interface
MAP Interface and AUX Interface Configuration Registers
CPRI MegaCore Function December 2013 Altera Corporation
User Guide
enable [0] RW Enable mapping of IQ sample into current timeslot. 1'h0
Note to Table 7–35 :
(1) Currently configurable entry in the advanced mapping Rx table. This register applies only to map_mode 01, 10, or 11, the advanced mapping
modes.
Table 7–35. CPRI_MAP_TBL_RX—Advanced Mapping Rx Configuration Table—Offset: 0x110 (1) (Part 2 of 2)
Field Bits Access Function Default
Table 7–36. CPRI_MAP_TBL_TX—Advanced Mapping Tx Configuration Table—Offset: 0x114 (1)
Field Bits Access Function Default
RSRV [31:29] UR0 Reserved. 3’h0
width [28:24] RW
Width of IQ sample in timeslot. Specified as 1/2 the
number of bits in the IQ sample.
This field is used in 15-bit mode with advanced mapping
mode 01 and in 16-bit mode with all advanced mapping
modes. In 15-bit mode with advanced mapping modes 10
and 11, you must set this field to the value of 15 to indicate
the full 30 bits of the 32-bit timeslot.
5'h0
RSRV 23:21] UR0 Reserved. 3’h0
position [20:16] RW
Starting bit position of IQ sample in timeslot. Specified as
1/2 the bit position number.
This field is used in 15-bit mode with advanced mapping
mode 01 and in 16-bit mode with all advanced mapping
modes. In 15-bit mode with advanced mapping modes 10
and 11, you must set this field to the offset of the next
available bit for your 30-bit sample in the current 32-bit
timeslot.
5'h0
RSRV [15:WIDTH_N_MAP+8] UR0 Reserved. 0
ac [WIDTH_N_MAP +7:8] RW AxC interface number. 0
RSRV [7:1] UR0 Reserved. 7'h0
enable [0] RW Enable mapping of IQ sample into current timeslot. 1'h0
Note to Table 7–36 :
(1) Currently configurable entry in the advanced mapping Tx table. This register applies only to map_mode 01, 10, or 11, the advanced mapping
modes.
Table 7–37. CPRI_MAP_OFFSET_RX—MAP Rx Frame Offset (1) , (2) —Offset: 0x118 (Part 1 of 2)
Field Bits Access Function Default
RSRV [31:17] UR0 Reserved. 15'h0
map_rx_hf_resync [16] RW
Enables synchronization every hyperframe instead of every radio
frame. When asserted, the
map_rx_offset_z field is ignored.
1’h0
map_rx_offset_z [15:8] RW
Hyperframe number for start of MAP receiver AxC container block
write to each enabled mapN Rx buffer.
8’h0