SanDisk SDSDB-016G-A11 Product Manual page 37

Revision 2.2
DSR_IMP—defines if the configurable driver stage is integrated on the card. If set, a
Driver Stage Register (DSR) must also be implemented.
Table 3-20
DSR_IMP
0
1
C_SIZE (Device Size)—computes the card capacity. The memory capacity of the card
is computed from the entries C_SIZE, C_SIZE_MULT and READ_BL_LEN as
follows:
Therefore, the maximum capacity that can be coded is 4096*512*2048=4 GB. For
example, a 4-MB card with BLOCK_LEN = 512 can be coded with C_SIZE_MULT =
0 and C_SIZE = 2047.
VDD_R_CURR_MIN, VDD_W_CURR_MIN—minimum values for read and write
currents at the VDD power supply are coded in Table 3-21.
Table 3-21
VDD_R_CURR MIN
VDD_W_CURR MIN
2:0
VDD_R_CURR_MAX, VDD_W_CURR_MAX—maximum values for read and
write currents on VDD power supply are coded Table 3-22.
Table 3-22
VDD_R_CURR MAX
VDD_W_CURR MAX
2:0
C_SIZE_MULT (Device Size Multiplier)—codes a factor MULT for computing the
total device size (see C_SIZE). The factor MULT is defined as 2
© 2004 SanDisk Corporation
DSR Implementation Code Table
No DSR implemented
DSR implemented
memory capacity = BLOCKNR * BLOCK_LEN
Where:
BLOCKNR = (C_SIZE+1) * MULT
C_SIZE_MULT+2
MULT = 2
BLOCK_LEN = 2
V Minimum Current Consumption
DD
0=0.5 mA, 1=1 mA, 2=5 mA, 3=10 mA, 4=25 mA, 5=35 mA, 6=60 mA, 7=100
mA
V Maximum Current Consumption
DD
0=1 mA, 1=5 mA, 2=10 mA, 3=25 mA, 4=35 mA, 5=45 mA, 6=80 mA, 7=200
mA
3-17
Chapter 3 – SD Card Interface Description
DSR Type
(C_SIZE_MULT < 8)
READ_BL_LEN
(READ_BL_LEN < 12)
Code for Current Consumption @ V
Code for Current Consumption @ V
SD Card Product Manual
DD
DD
C_SIZE_MULT+2
.
12/08/04