Rainbow Electronics DS26519 - Manual (Page 210)

DS26519 16-Port T1/E1/J1 Transceiver
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Register Name: RHF
Register Description: Receive HDLC FIFO Register
Register Address: 0B6h + (200h x (n - 1)) + (2000h x [(n - 1) / 8]): where n = 1 to 16
Bit
# 7 6 5 4 3 2 1 0
Name RHD7 RHD6 RHD5 RHD4 RHD3 RHD2 RHD1 RHD0
Default
0 0 0 0 0 0 0 0
Bit 7: Receive HDLC Data Bit 7 (RHD7). MSB of a HDLC packet data byte.
Bit 6: Receive HDLC Data Bit 6 (RHD6)
Bit 5: Receive HDLC Data Bit 5 (RHD5)
Bit 4: Receive HDLC Data Bit 4 (RHD4)
Bit 3: Receive HDLC Data Bit 3 (RHD3)
Bit 2: Receive HDLC Data Bit 2 (RHD2)
Bit 1: Receive HDLC Data Bit 1 (RHD1)
Bit 0: Receive HDLC Data Bit 0 (RHD0). LSB of a HDLC packet data byte.
Register Name: RBCS1, RBCS2, RBCS3, RBCS4
Register Description: Receive Blank Channel Select Registers 1 to 4
Register Address: 0C0h, 0C1h, 0C2h, 0C3h + (200h x (n - 1)) + (2000h x [(n - 1) / 8]): where n = 1 to 16
(MSB)
(LSB)
Bit # 7 6 5 4 3 2 1 0
Name CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1 RBCS1
CH16 CH15 CH14 CH13 CH12 CH11 CH10 CH9 RBCS2
CH24 CH23 CH22 CH21 CH20 CH19 CH18 CH17 RBCS3
CH32 CH31 CH30 CH29 CH28 CH27 CH26 CH25
RBCS4 (E1
Mode Only)
Bits 7 to 0: Receive Blank Channel Select for Channels 1 to 32 (CH[1:32])
0 = Do not blank this channel (channel data is available on RSERn).
1 = Data on RSERn is forced to all ones for this channel.
Note that when two or more sequential channels are chosen to be blanked, the receive-slip zone select bit should
be set to zero. If the blank channels are distributed (such as 1, 5, 9, 13, 17, 21, 25, 29), then the RSZS bit can be
set to one, which may provide a lower occurrence of slips in certain applications.